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Rhestr o Siroedd Ohio

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Dyma restr o'r 88 rhanbarth gweinyddol sy'n cael eu hadnabod wrth yr enw County yn Nhalaith Ohio yn yr Unol Daleithiau, yn nhrefn yr wyddor:[1]

Siroedd Ohio

Rhestr

golygu

FIPS

golygu

Mae'r cod Safon Prosesu Gwybodaeth Ffederal (FIPS), a ddefnyddir gan lywodraeth yr Unol Daleithiau i roi cod hunaniaeth unigryw i daleithiau a siroedd y wlad, yn cael ei ddarparu gyda phob cofnod yn y tabl. Cod Ohio yw 39, a fyddai, o'i gyfuno ag unrhyw god sirol, yn cael ei ysgrifennu fel 39XXX. Mae Adams County yn rhannu'r cod 001 gyda nifer o siroedd eraill yn yr Unol Daleithiau megis Allegany County, Maryland ond o ragddodi cod talaith Ohio, 39, i cod Adams County ceir 39001, cod unigryw i'r sir honno.

Sir
 Cod FIPS [2] Sedd sirol[3] Sefydlu[4] Tarddiad[5] Etymoleg[4][5] Poblogaeth[2][3] Maint[3] Map
Adams County 001 West Union 10 Gorffennaf, 1797 Hamilton County John Adams (1735-1826), Arlywydd yr Unol Daleithiau pan drefnwyd y sir 700428550000000000028,550 7002583910000000000583.91 sq mi
(70031512000000000001,512 km2)		  
Allen County 003 Lima 1 Mawrth, 1820 Shelby County John Allen (1771 / 2-1813), cyrnol yn Rhyfel 1812 7005106331000000000106,331 7002404430000000000404.43 sq mi
(70031047000000000001,047 km2)		  
Ashland County 005 Ashland 24 Chwefror, 1846 Wayne County, Richland County, Huron County, a Lorain County Ashland, cartref Seneddwr yr Unol Daleithiau o Kentucky Henry Clay. 700453139000000000053,139 7002424370000000000424.37 sq mi
(70031099000000000001,099 km2)		  
Ashtabula County 007 Jefferson 7 Mehefin, 1807 Trumbull County a Geauga County Afon Ashtabula , sy'n golygu "afon bysgod" mewn iaith frodorol yr Algonquin [6] 7005101497000000000101,497 7002702440000000000702.44 sq mi
(70031819000000000001,819 km2)		  
Athens County 009 Athens 1 Mawrth, 1805 Washington County Athen yng Ngwlad Groeg 700464757000000000064,757 7002506760000000000506.76 sq mi
(70031313000000000001,313 km2)		  
Auglaize County 011 Wapakoneta 14 Chwefror, 1848 Allen County, Mercer County, Darke County, Hardin County, Logan County, Shelby County, a Van Wert County Afon Auglaize, sy'n golygu "afon goed wedi cwympo" yn iaith frodorol y Shawnee 700445949000000000045,949 7002401250000000000401.25 sq mi
(70031039000000000001,039 km2)		  
Belmont County 013 St. Clairsville 7 Medi, 1801 Jefferson County a Washington County Belle monte, sy'n golygu "mynydd hardd" yn y Ffrangeg 700470400000000000070,400 7002537350000000000537.35 sq mi
(70031392000000000001,392 km2)		  
Brown County 015 Georgetown 1 Mawrth, 1818 Adams County a Clermont County Y Cadfridog Jacob Brown (1775-1828), swyddog yn Rhyfel 1812 700444846000000000044,846 7002491760000000000491.76 sq mi
(70031274000000000001,274 km2)		  
Butler County 017 Hamilton 1 Mai, 1803 Hamilton County Y Cadfridog Richard Butler (1743–1791), a laddwyd ym Mrwydr y Wabash 7005368130000000000368,130 7002467270000000000467.27 sq mi
(70031210000000000001,210 km2)		  
Carroll County 019 Carrollton 1 Ionawr, 1833 Columbiana County, Stark County, Harrison County, Jefferson County, a Tuscarawas County Charles Carroll (1737-1832), arwyddwr olaf Datganiad Annibyniaeth yr Unol Daleithiau 700428836000000000028,836 7002394670000000000394.67 sq mi
(70031022000000000001,022 km2)		  
Champaign County 021 Urbana 1 Mawrth, 1805 Greene County a Franklin County Ffrangeg am "wastadedd", yn disgrifio'r tir yn yr ardal 700440097000000000040,097 7002428560000000000428.56 sq mi
(70031110000000000001,110 km2)		  
Clark County 023 Springfield 1 Mawrth, 1818 Champaign County, Madison County, a Greene County Y Cadfridog George Rogers Clark (1752-1818) a orchfygodd llwyth brodorol y Shawnee mewn brwydr ger ardal Springfield 7005138333000000000138,333 7002399860000000000399.86 sq mi
(70031036000000000001,036 km2)		  
Clermont County 025 Batavia 6 Rhagfyr, 1800 Hamilton County Ffrangeg am "mynydd clir" 7005197363000000000197,363 7002451990000000000451.99 sq mi
(70031171000000000001,171 km2)		  
Clinton County 027 Wilmington 1 Mawrth, 1810 Highland County a Warren County George Clinton (1739-1812), is-lywydd yr UD pan drefnwyd y sir 700442040000000000042,040 7002410880000000000410.88 sq mi
(70031064000000000001,064 km2)		  
Columbiana County 029 Lisbon 1 Mai, 1803 Jefferson County a Washington County Christopher Columbus 7005107841000000000107,841 7002532460000000000532.46 sq mi
(70031379000000000001,379 km2)		  
Coshocton County 031 Coshocton 31 Ionawr, 1810 Muskingum County a Tuscarawas County Gair llwyth y Delaware sy'n golygu "cymer dyfroedd" 700436901000000000036,901 7002564070000000000564.07 sq mi
(70031461000000000001,461 km2)		  
Crawford County 033 Bucyrus 1 Ebrill, 1820 Delaware County Cyrnol William Crawford (1732–1782), swyddog yn Rhyfel Annibyniaeth America 700443784000000000043,784 7002402110000000000402.11 sq mi
(70031041000000000001,041 km2)		  
Cuyahoga County 035 Cleveland 7 Mehefin, 1807 Geauga County Afon Cuyahoga , sy'n golygu "afon gam" yn yr iaith Iroquoaidd [7] 70061249352000000001,249,352 7002458490000000000458.49 sq mi
(70031187000000000001,187 km2)		  
Darke County 037 Greenville 3 Ionawr, 1809 Miami County Cadfridog William Darke (1736–1801), swyddog yn Rhyfel Annibyniaeth America 700452959000000000052,959 7002599790000000000599.80 sq mi
(70031553000000000001,553 km2)		  
Defiance County 039 Defiance 7 Ebrill, 1845 Williams County, Henry County a Paulding County Fort Defiance, a adeiladwyd ym 1794 gan y Cadfridog Anthony Wayne 700439037000000000039,037 7002411160000000000411.16 sq mi
(70031065000000000001,065 km2)		  
Delaware County 041 Delaware 1 Ebrill, 1808 Franklin County Llwyth brodorol y Delaware 7005174214000000000174,214 7002442410000000000442.41 sq mi
(70031146000000000001,146 km2)		  
Erie County 043 Sandusky 15 Mawrth, 1838 Huron County a Sandusky County Llwyth brodorol yr Erie 700477079000000000077,079 7002254880000000000254.88 sq mi
(7002660000000000000660 km2)		  
Fairfield County 045 Lancaster 9 Rhagfyr, 1800 Ross County a Washington County Y Saesneg am "gaeau teg" 7005146156000000000146,156 7002505110000000000505.11 sq mi
(70031308000000000001,308 km2)		  
Fayette County 047 Washington Court House 1 Mawrth, 1810 Ross County Gilbert du Motier, marquis de La Fayette , swyddog milwrol Ffrengig ac aristocrat a gymerodd ran yn y chwyldroadau Americanaidd a Ffrengig. 700429030000000000029,030 7002406580000000000406.58 sq mi
(70031053000000000001,053 km2)		  
Franklin County 049 Columbus 30 Ebrill, 1803 Ross County a Wayne County Benjamin Franklin (1706–1791), Tad Sylfaenol, awdur, argraffydd, damcaniaethwr gwleidyddol, gwyddonydd, dyfeisiwr, a gwladweinydd 70061264518000000001,264,518 7002539870000000000539.87 sq mi
(70031398000000000001,398 km2)		  
Fulton County 051 Wauseon 1 Ebrill, 1850 Lucas County, Henry County, a Williams County Robert Fulton (1765-1815), dyfeisiwr yr agerlong 700442698000000000042,698 7002406789999900000406.78 sq mi
(70031054000000000001,054 km2)		  
Gallia County 053 Gallipolis 30 Ebrill, 1803 Washington County ac Adams County Gâl, enw hynafol Ffrainc 700430934000000000030,934 7002468780000000000468.78 sq mi
(70031214000000000001,214 km2)		  
Geauga County 055 Chardon 1 Mawrth, 1806 Trumbull County Enw brodorol am yr anifail "raccoon" (Procyon lotor) 700493389000000000093,389 7002403660000000000403.66 sq mi
(70031045000000000001,045 km2)		  
Greene County 057 Xenia 1 Mai, 1803 Hamilton County a Ross County Y Cadfridog Nathanael Greene (1742–1786), swyddog yn Rhyfel Annibyniaeth America 7005161573000000000161,573 7002414880000000000414.88 sq mi
(70031075000000000001,075 km2)		  
Guernsey County 059 Cambridge 1 Mawrth, 1810 Belmont County a Muskingum County Ynys Guernsey, o ble y tarddodd y mwyafrif o'r ymsefydlwyr 700440087000000000040,087 7002521900000000000521.90 sq mi
(70031352000000000001,352 km2)		  
Hamilton County 061 Cincinnati 2 Ionawr, 1790 Un o'r siroedd gwreiddiol Alexander Hamilton (1755 / 7-1804), Ysgrifennydd y Trysorlys pan drefnwyd y sir 7005802374000000000802,374 7002407360000000000407.36 sq mi
(70031055000000000001,055 km2)		  
Hancock County 063 Findlay 1 Ebrill, 1820 Logan County John Hancock (1737–1793), llywydd y Gyngres Gyfandirol 700474782000000000074,782 7002531350000000000531.35 sq mi
(70031376000000000001,376 km2)		  
Hardin County 065 Kenton 1 Ebrill, 1820 Logan County Y Cadfridog John Hardin (1753–1792), swyddog yn Rhyfel Annibyniaeth America 700432058000000000032,058 7002470290000000000470.29 sq mi
(70031218000000000001,218 km2)		  
Harrison County 067 Cadiz 1 Chwefror, 1813 Jefferson County a Tuscarawas County Y Cadfridog William Henry Harrison (1773–1841), swyddog yn Rhyfel 1812 ac wedyn yn Arlywydd yr Unol Daleithiau 700415864000000000015,864 7002403539999900000403.53 sq mi
(70031045000000000001,045 km2)		  
Henry County 069 Napoleon 1 Ebrill, 1820 Shelby County Patrick Henry (1736–1799), Deddfwr yng nghyfnod Rhyfel Annibyniaeth America, areithiwr, ac ysgolhaig 700428215000000000028,215 7002416500000000000416.50 sq mi
(70031079000000000001,079 km2)		  
Highland County 071 Hillsboro 1 Mai, 1805 Ross County, Adams County, a Clermont County Y Saesneg am "ucheldir", disgrifiadol o dir y sir 700443589000000000043,589 7002553280000000000553.28 sq mi
(70031433000000000001,433 km2)		  
Hocking County 073 Logan 1 Mawrth, 1818 Athens County, Ross County a Fairfield County Yn deillio o bosib o air yn iaith llwyth y Delaware "Hoch-Hoch-ing", sy'n golygu "potel" 700429380000000000029,380 7002422750000000000422.75 sq mi
(70031095000000000001,095 km2)		  
Holmes County 075 Millersburg 20 Ionawr, 1824 Coshocton County, Wayne County a Tuscarawas County Yr Uwchgapten Andrew Holmes (bu farw 1814), swyddog yn Rhyfel 1812 700442366000000000042,366 7002422990000000000422.99 sq mi
(70031096000000000001,096 km2)		  
Huron County 077 Norwalk 7 Mawrth, 1809 Portage County a Cuyahoga County Llwyth brodorol y Huron 700459626000000000059,626 7002492690000000000492.69 sq mi
(70031276000000000001,276 km2)		  
Jackson County 079 Jackson 1 Mawrth, 1816 Scioto County, Gallia County, Athens County a Ross County Andrew Jackson (1767–1845), Arlywydd yr Unol Daleithiau 700433225000000000033,225 7002420289999900000420.28 sq mi
(70031089000000000001,089 km2)		  
Jefferson County 081 Steubenville 29 Gorffennaf, 1797 Washington County Thomas Jefferson (1743–1826) 700469709000000000069,709 7002409610000000000409.61 sq mi
(70031061000000000001,061 km2)		  
Knox County 083 Mount Vernon 1 Mawrth, 1808 Fairfield County Y Cadfridog Henry Knox, yr Ysgrifennydd Rhyfel cyntaf 700460921000000000060,921 7002527120000000000527.12 sq mi
(70031365000000000001,365 km2)		  
Lake County 085 Painesville 6 Mawrth, 1840 Geauga County a Cuyahoga County Ei leoliad ar Lyn Erie 7005230041000000000230,041 7002228210000000000228.21 sq mi
(7002591000000000000591 km2)		  
Lawrence County 087 Ironton 21 Rhagfyr, 1815 Gallia County a Scioto County Y Capten James Lawrence (1781–1813), arwr llyngesol yn Rhyfel 1812 700462450000000000062,450 7002454960000000000454.96 sq mi
(70031178000000000001,178 km2)		  
Licking County 089 Newark 1 Mawrth, 1808 Fairfield County Wedi'i enwi ar gyfer y "llyfiadau" halen yn yr ardal 7005166492000000000166,492 7002686500000000000686.50 sq mi
(70031778000000000001,778 km2)		  
Logan County 091 Bellefontaine 1 Mawrth, 1818 Champaign County Cadfridog Benjamin Logan (tua 1742 - 1802), a ddinistriodd drefi llwyth y Shawnee yn y sir 700445858000000000045,858 7002458440000000000458.44 sq mi
(70031187000000000001,187 km2)		  
Lorain County 093 Elyria 26 Rhagfyr, 1822 Huron County, Cuyahoga County a Medina County Talaith Lorraine, Ffrainc 7005301356000000000301,356 7002492500000000000492.50 sq mi
(70031276000000000001,276 km2)		  
Lucas County 095 Toledo 20 Mehefin, 1835 Wood County, Sandusky County a Huron County Robert Lucas (1781-1853), Llywodraethwr Ohio pan gafodd y sir ei chreu 7005441815000000000441,815 7002340460000000000340.46 sq mi
(7002882000000000000882 km2)		  
Madison County 097 London 1 Mawrth, 1810 Franklin County James Madison (1751–1836), Arlywydd yr Unol Daleithiau 700443435000000000043,435 7002465440000000000465.44 sq mi
(70031205000000000001,205 km2)		  
Mahoning County 099 Youngstown 1 Mawrth, 1846 Columbiana County a Trumbull County Afon Mahoning , o air Lenape sy'n golygu ger y lle hallt 7005238823000000000238,823 7002415250000000000415.25 sq mi
(70031075000000000001,075 km2)		  
Marion County 101 Marion 1 Ebrill, 1820 Delaware County Cadfridog Francis Marion (1732–1795), is-gyrnol yn y Fyddin Gyfandirol ac yn ddiweddarach Brigadydd Cyffredinol yn Rhyfel Annibyniaeth America. 700466501000000000066,501 7002403849999900000403.84 sq mi
(70031046000000000001,046 km2)		  
Medina County 103 Medina 18 Chwefror, 1812 Portage County Medina, Saudi Arabia 7005176395000000000176,395 7002423000000000000423 sq mi
(70031096000000000001,096 km2)		  
Meigs County 105 Pomeroy 1 Ebrill, 1819 Gallia County a Athens County Return Jonathan Meigs, Jr (1764-1825), Llywodraethwr Ohio a Phostfeistr Cyffredinol ar yr adeg y trefnwyd y sir 700423770000000000023,770 7002429420000000000429.42 sq mi
(70031112000000000001,112 km2)		  
Mercer County 107 Celina 1 Ebrill, 1820 Darke County Y Cadfridog Hugh Mercer (1726–1777), swyddog yn Rhyfel Annibyniaeth America 700440814000000000040,814 7002463270000000000463.27 sq mi
(70031200000000000001,200 km2)		  
Miami County 109 Troy 1 Mawrth, 1807 Montgomery County Llwyth brodorol y Miami 7005102506000000000102,506 7002407040000000000407.04 sq mi
(70031054000000000001,054 km2)		  
Monroe County 111 Woodsfield 29 Ionawr, 1813 Belmont County, Washington County a Guernsey County James Monroe (1758–1831) 700414642000000000014,642 7002455540000000000455.54 sq mi
(70031180000000000001,180 km2)		  
Montgomery County 113 Dayton 1 Mai, 1803 Hamilton County a Wayne County Y Cadfridog Richard Montgomery (1738–1775), swyddog yn Rhyfel Annibyniaeth America 7005535153000000000535,153 7002461680000000000461.68 sq mi
(70031196000000000001,196 km2)		  
Morgan County 115 McConnelsville 29 Rhagfyr, 1817 Washington County, Guernsey County a Muskingum County Y Cadfridog Daniel Morgan (c. 1735 – 1802), swyddog yn Rhyfel Annibyniaeth America 700415054000000000015,054 7002417660000000000417.66 sq mi
(70031082000000000001,082 km2)		  
Morrow County 117 Mount Gilead 1 Mawrth, 1848 Knox County, Marion County, Delaware County a Richland County Jeremiah Morrow (1771–1852), Llywodraethwr Ohio 700434827000000000034,827 7002406220000000000406.22 sq mi
(70031052000000000001,052 km2)		  
Muskingum County 119 Zanesville 1 Mawrth, 1804[8][9] Washington County a Fairfield County Gair Indiaid sy'n golygu "Tref ger yr afon" 700486074000000000086,074 7002664630000000000664.63 sq mi
(70031721000000000001,721 km2)		  
Noble County 121 Caldwell 1 Ebrill, 1851 Monroe County, Washington County, Morgan County a Guernsey County James Noble (1785-1831), gwladychwr cynnar a Seneddwr yr Unol Daleithiau yn y dyfodol o Indiana 700414645000000000014,645 7002399000000000000399.00 sq mi
(70031033000000000001,033 km2)		  
Ottawa County 123 Port Clinton 6 Mawrth, 1840 Erie County, Sandusky County a Lucas County Enwyd ar gyfer llwyth yr Ottawa ; Ystyr Ottawa yw "masnachwr" yn eu hiaith 700441428000000000041,428 7002254950000000000254.95 sq mi
(7002660000000000000660 km2)		  
Paulding County 125 Paulding 1 Ebrill, 1820 Darke County John Paulding (1758-1818), cipiwr yr ysbïwr John André yn ystod Rhyfel Annibyniaeth America 700419614000000000019,614 7002416260000000000416.26 sq mi
(70031078000000000001,078 km2)		  
Perry County 127 New Lexington 1 Mawrth, 1818 Washington County, Fairfield County a Muskingum County Comodor Oliver Hazard Perry (1785–1819), swyddog llyngesol yn ystod Rhyfel 1812 700436058000000000036,058 7002409789999900000409.78 sq mi
(70031061000000000001,061 km2)		  
Pickaway County 129 Circleville 1 Mawrth, 1810 Ross County, Fairfield County a Franklin County Camsillafiad o enw llwyth y Piqua, cangen o'r Shawnee 700455698000000000055,698 7002501910000000000501.91 sq mi
(70031300000000000001,300 km2)		  
Pike County 131 Waverly 1 Chwefror, 1815 Ross County, Scioto County a Adams County General Zebulon M. Pike (1779–1813), swyddog Rhyfel 1812 a darganfyddwr Pikes Peak yn Colorado ym 1806 700428709000000000028,709 7002441490000000000441.49 sq mi
(70031143000000000001,143 km2)		  
Portage County 133 Ravenna 7 Gorffennaf, 1807 Trumbull County O'r gair Saesneg portage, i gario cwch dros ddarn o dir 7005161419000000000161,419 7002492390000000000492.39 sq mi
(70031275000000000001,275 km2)		  
Preble County 135 Eaton 1 Mawrth, 1808 Montgomery County a Butler County Y Captain Edward Preble (1761–1807), swyddog llyngesol yn Rhyfel Annibyniaeth America 700442270000000000042,270 7002424800000000000424.80 sq mi
(70031100000000000001,100 km2)		  
Putnam County 137 Ottawa 1 Ebrill, 1820 Shelby County Y Cadfridog Israel Putnam (1718–1790), swyddog yn Rhyfel Annibyniaeth America 700434499000000000034,499 7002483870000000000483.87 sq mi
(70031253000000000001,253 km2)		  
Richland County 139 Mansfield 1 Mawrth, 1808 Fairfield County Saesneg am "dir ffrwythlon", disgrifiadol o dir yr ardal 7005124475000000000124,475 7002496880000000000496.88 sq mi
(70031287000000000001,287 km2)		  
Ross County 141 Chillicothe 20 Awst, 1798 Adams County a Washington County NEnwyd er anrhydedd i'r Seneddwr yr Unol Daleithiau o Pennsylvania James Ross gan y llywodraethwr tiriogaethol Arthur St. Clair 700478064000000000078,064 7002688410000000000688.41 sq mi
(70031783000000000001,783 km2)		  
Sandusky County 143 Fremont 1 Ebrill, 1820 Huron County Gair y llwyth Iroquoisam "ddŵr oer" 700460944000000000060,944 7002409180000000000409.18 sq mi
(70031060000000000001,060 km2)		  
Scioto County 145 Portsmouth 1 Mai, 1803 Adams County Afon Scioto River; Scioto yw enw llwyth y Wyandot am "garw" 700479499000000000079,499 7002612270000000000612.27 sq mi
(70031586000000000001,586 km2)		  
Seneca County 147 Tiffin 1 Ebrill, 1820 Huron County Llwyth brodorol y Seneca 700456745000000000056,745 7002550590000000000550.59 sq mi
(70031426000000000001,426 km2)		  
Shelby County 149 Sidney 1 Ebrill, 1819 Miami County Y Cadfridog Isaac Shelby (1750–1826), swyddog yn Rhyfel Annibyniaeth America a Llywodraethwr Kentucky 700449423000000000049,423 7002409270000000000409.27 sq mi
(70031060000000000001,060 km2)		  
Stark County 151 Canton 13 Chwefror, 1808 Columbiana County Y Cadfridog John Stark (1728–1822), swyddog yn Rhyfel Annibyniaeth America 7005375586000000000375,586 7002576140000000000576.14 sq mi
(70031492000000000001,492 km2)		  
Summit County 153 Akron 3 Mawrth, 1840 Medina County, Portage County a Stark County Saesneg am "gopa" 7005541781000000000541,781 7002419380000000000419.38 sq mi
(70031086000000000001,086 km2)		  
Trumbull County 155 Warren 10 Gorffennaf, 1800 Jefferson County a Wayne County Jonathan Trumbull (1710–1785), Llywodraethwr Connecticut pan drefnwyd y sir 7005210312000000000210,312 7002616480000000000616.48 sq mi
(70031597000000000001,597 km2)		  
Tuscarawas County 157 New Philadelphia 15 Mawrth, 1808 Muskingum County Afon Tuscarawas, ar ôl y llwyth oedd yn byw ar lan yr afon 700492582000000000092,582 7002567580000000000567.58 sq mi
(70031470000000000001,470 km2)		  
Union County 159 Marysville 1 Ebrill, 1820 Delaware County, Franklin County, Logan County a Madison County Saesneg am "undeb" y sir wedi ei ffurfio gan undeb o bedair sir 700452300000000000052,300 7002436650000000000436.65 sq mi
(70031131000000000001,131 km2)		  
Van Wert County 161 Van Wert 1 Ebrill, 1820 Darke County Isaac Van Wart (1760–1828), cipiwr yr ysbïwr John André yn ystod Rhyfel Annibyniaeth America 700428744000000000028,744 7002410099999900000410.09 sq mi
(70031062000000000001,062 km2)		  
Vinton County 163 McArthur 23 Mawrth, 1850 Athens County, Gallia County, Hocking County, Jackson County a Ross County Samuel Finley Vinton (1792-1862), Gwladweinydd o Ohio ac aelod o Gyngres yr UD 700413435000000000013,435 7002414080000000000414.08 sq mi
(70031072000000000001,072 km2)		  
Warren County 165 Lebanon 1 Mai, 1803 Hamilton County Y Cadfridog Joseph Warren (1741–1775), swyddog yn Rhyfel Annibyniaeth America 7005212693000000000212,693 7002399630000000000399.63 sq mi
(70031035000000000001,035 km2)		  
Washington County 167 Marietta 27 Gorffennaf, 1788 Un o'r siroedd gwreiddiol George Washington (1732–1799) 700461778000000000061,778 7002635150000000000635.15 sq mi
(70031645000000000001,645 km2)		  
Wayne County 169 Wooster 1 Mawrth, 1808 O dir heb ei drefnu Y Cadfridog Anthony Wayne (1745–1796), swyddog yn Rhyfel Annibyniaeth America 7005114520000000000114,520 7002555360000000000555.36 sq mi
(70031438000000000001,438 km2)		  
Williams County 171 Bryan 1 Ebrill, 1820 Darke County David Williams (1754–1831), cipiwr yr ysbïwr John André yn ystod Rhyfel Annibyniaeth America 700437642000000000037,642 7002421740000000000421.74 sq mi
(70031092000000000001,092 km2)		  
Wood County 173 Bowling Green 1 Ebrill, 1820 O dir heb ei drefnu Eleazer D. Wood (1783–1814), sylfaenydd Fort Meigs 7005125488000000000125,488 7002617320000000000617.32 sq mi
(70031599000000000001,599 km2)		  
Wyandot County 175 Upper Sandusky 3 Chwefror, 1845 Marion County, Crawford County a Hardin County ar ôl enw llwyth y Wyandot 700422615000000000022,615 7002405610000000000405.61 sq mi
(70031051000000000001,051 km2)		  

Map dwysedd poblogaeth

golygu

Mae lliwiau gwahanol yn dynodi dwysedd trymach.

 

Cyfeiriadau

golygu
  1. ↑ "How Many Counties are in Your State?". web.archive.org. 2009-04-22. Archifwyd o'r gwreiddiol ar 2009-04-22. Cyrchwyd 2020-04-21.CS1 maint: BOT: original-url status unknown (link)
  2. ↑ 2.0 2.1 USDA County FIPS Codes adalwyd 6 Ebrill 2020
  3. ↑ 3.0 3.1 3.2 Wherig - List of Ohio Counties and County Seats adalwyd 6 Ebrill 2020
  4. ↑ 4.0 4.1 "Federal Roster: County of Ohio, Derivation of Name County a Date of Erection" (PDF). Archifwyd o'r gwreiddiol (PDF) ar 2013-07-12. Cyrchwyd 2020-05-06.
  5. ↑ 5.0 5.1 Howe, Henry (1891). Historical Collections of Ohio. 2. Columbus, OH: Henry Howe County a Son. (OH county source): ISBN 1425565735 County a Google Books
  6. ↑ Ashtabula, Encyclopædia Britannica, 2007. adalwyd 6 Ebrill 2020.
  7. ↑ Cuyahoga River, Encyclopædia Britannica, 2007. addalwyd 6 Ebrill 2020.
  8. ↑ Downes, t. 368.
  9. ↑ Taylor & Taylor, t. 40.
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