State 39 · OH

Ohio county map

Ohio has 88 counties. Ashtabula County is the largest by land at 702 square miles, and Franklin County is the most populous with 1,356,303 residents.

Population 2024
11,883,304
#7 of 51
Land area
40,859 sq mi
#35 of 51
Density
290.8 / sq mi
#11 of 51
Counties
88
Capital: Columbus
N
Columbus 39.96° N, 83.00° W

Map of all 88 counties in Ohio

Every county is labeled on Census 2024 boundaries. Download it as a PDF to print, a PNG, or an editable SVG. For blank, colored or city versions, see the printable Ohio map sheets.

AdamsAllenAshlandAshtabulaAthensAuglaizeBelmontBrownButlerCarrollChampaignClarkClermontClintonColumbianaCoshoctonCrawfordCuyahogaDarkeDefianceDelawareErieFairfieldFayetteFranklinFultonGalliaGeaugaGreeneGuernseyHamiltonHancockHardinHarrisonHenryHighlandHockingHolmesHuronJacksonJeffersonKnoxLakeLawrenceLickingLoganLorainLucasMadisonMahoningMarionMedinaMeigsMercerMiamiMonroeMontgomeryMorganMorrowMuskingumNobleOttawaPauldingPerryPickawayPikePortagePreblePutnamRichlandRossSanduskySciotoSenecaShelbyStarkSummitTrumbullTuscarawasUnionVan WertVintonWarrenWashingtonWayneWilliamsWoodWyandotOhio county map. Online Map Tools (onlinemaptools.com), Census 2024 boundaries, free to reuse with credit.
88 units labeled. The orange dot marks the capital.

Ohio population and land area

Ohio had 11,883,304 residents in the Census Vintage 2024 estimates, the sum of its counties. That ranks 7th of the 50 states and DC. Its 40,859 square miles of land rank 35th. Ohio averages 290.8 people per square mile of land, 3.0 times the national figure of 96.3. By density it ranks 11th.

Population, 2024
11,883,3047th of 51
Land area
40,859 sq mi35th of 51
Density
290.8 per sq mi11th of 51
Number of counties
88
Capital
Columbus39.962° N, 83.001° W
State FIPS code
39

Ohio counties by population, density and income

Each shape is shaded by quintile, darker for higher values. Switch the measure above the map. Select a shape to open that county's page. The pin marks the capital, Columbus.

Shelby County: 118Defiance County: 94Darke County: 86Seneca County: 99Wood County: 216Fayette County: 71Clark County: 341Hocking County: 65Jackson County: 78Miami County: 275Richland County: 252Union County: 166Auglaize County: 114Hancock County: 141Morgan County: 32Van Wert County: 71Hardin County: 65Paulding County: 45Portage County: 336Delaware County: 537Harrison County: 35Ross County: 110Crawford County: 104Clinton County: 103Henry County: 66Pike County: 61Cuyahoga County: 2,713Highland County: 79Knox County: 121Ottawa County: 156Huron County: 118Erie County: 294Holmes County: 106Lawrence County: 123Marion County: 161Fairfield County: 333Putnam County: 71Guernsey County: 73Vinton County: 30Gallia County: 62Trumbull County: 324Wayne County: 210Perry County: 87Ashland County: 124Fulton County: 104Brown County: 90Lucas County: 1,255Stark County: 650Medina County: 438Belmont County: 122Williams County: 87Mahoning County: 549Noble County: 36Greene County: 417Preble County: 96Allen County: 251Athens County: 126Jefferson County: 157Adams County: 47Monroe County: 29Washington County: 92Logan County: 101Franklin County: 2,547Warren County: 638Wyandot County: 53Licking County: 271Hamilton County: 2,065Clermont County: 473Butler County: 856Coshocton County: 66Geauga County: 238Sandusky County: 144Ashtabula County: 138Carroll County: 67Tuscarawas County: 162Morrow County: 88Montgomery County: 1,165Mercer County: 92Lake County: 1,013Pickaway County: 124Madison County: 98Muskingum County: 130Meigs County: 50Columbiana County: 188Lorain County: 656Scioto County: 118Champaign County: 91Summit County: 1,304
Density
  1. < 71
  2. 71+
  3. 101+
  4. 141+
  5. 333+
no data

Largest county in Ohio by land area

Ashtabula County ranks first at 702 square miles and Lake County last at 229 square miles. The top value is 3.1 times the bottom one.

  1. 01Ashtabula County702
  2. 02Ross County689
  3. 03Licking County682
  4. 04Muskingum County665
  5. 05Washington County632
  6. 06Trumbull County618
  7. 07Wood County617
  8. 08Scioto County610
  9. 09Darke County598
  10. 10Adams County584

Most populous county in Ohio

Franklin County ranks first at 1,356,303 residents and Vinton County last at 12,545 residents. The gap is more than a hundredfold.

  1. 01Franklin County1,356,303
  2. 02Cuyahoga County1,240,594
  3. 03Hamilton County837,359
  4. 04Summit County538,370
  5. 05Montgomery County537,443
  6. 06Lucas County426,291
  7. 07Butler County399,542
  8. 08Stark County374,091
  9. 09Lorain County322,030
  10. 10Warren County256,059

Least populous county in Ohio

The smallest populations, fewest first. Estimates for small counties carry more uncertainty than those for large ones.

  1. 01Vinton County12,545
  2. 02Monroe County13,051
  3. 03Morgan County13,532
  4. 04Harrison County14,042
  5. 05Noble County14,269
Log scale, so small counties stay visible next to the largest.

Most densely populated county in Ohio

Cuyahoga County ranks first at 2,713.4 people per square mile and Monroe County last at 28.6 people per square mile. The top value is 95 times the bottom one.

  1. 01Cuyahoga County2,713.4
  2. 02Franklin County2,547.4
  3. 03Hamilton County2,065.3
  4. 04Summit County1,304.2
  5. 05Lucas County1,255.1
  6. 06Montgomery County1,164.9
  7. 07Lake County1,012.9
  8. 08Butler County856.4
  9. 09Lorain County656.5
  10. 10Stark County650.4
People per square mile of land, log scale.

Highest median household income in Ohio

Delaware County ranks first at $128,300 and Meigs County last at $50,127. The top value is 2.6 times the bottom one.

  1. 01Delaware County$128,300
  2. 02Warren County$107,973
  3. 03Union County$104,592
  4. 04Geauga County$99,863
  5. 05Medina County$90,211
  6. 06Fairfield County$84,701
  7. 07Greene County$84,015
  8. 08Clermont County$82,143
  9. 09Henry County$81,899
  10. 10Madison County$81,836

Towns and cities in Ohio

The Census Vintage 2024 subcounty estimates list 526 incorporated places in Ohio with 1,000 or more residents, holding 7,543,929 people together, or 63% of the state total. 254 of them have 5,000 or more. The northernmost is Conneaut at 41.927° N and the southernmost is South Point at 38.422° N. Among places of 5,000+, Sunbury grew fastest from July 2020 to July 2024, by 44.3%.

  1. 01Columbus933,263
  2. 02Cleveland365,379
  3. 03Cincinnati314,915
  4. 04Toledo265,638
  5. 05Akron189,664
  6. 06Dayton136,346
  7. 07Parma79,350
  8. 08Canton69,211
  9. 09Lorain65,751
  10. 10Hamilton63,953
  11. 11Youngstown59,123
  12. 12Springfield58,138
Largest incorporated places, Vintage 2024 estimates.

Columbus, the capital

56.0% of Ohio's place population, 4,223,922 of 7,543,929 people, lives in places within 100 miles of Columbus. That ranks 33rd of 51 for how central the capital is.

See all states in the capital radius ranking and the most remote towns ranking. Sunrise and sunset times for Columbus, month by month, are on the Columbus daylight page.

States bordering Ohio

Ohio borders 5 states or districts. The nearest neighboring capital is Charleston, 135 miles SE of Columbus in a straight line.

UTM zones in Ohio

The internal points of Ohio's counties fall in UTM zones 16, 17. Zones are 6 degrees of longitude wide, numbered from 180° W: zone = floor((longitude + 180) / 6) + 1. Because Ohio spans 2 zones, no single UTM zone covers the whole state.

All 88 counties in Ohio

Sort by any column. The small orange number marks the top 3 in the state by population.

FIPS
39049Franklin County1,356,303#15322,547.4$71,730
39035Cuyahoga County1,240,594#24572,713.4$61,912
39061Hamilton County837,359#34052,065.3$68,810
39153Summit County538,3704131,304.2$69,786
39113Montgomery County537,4434611,164.9$62,650
39095Lucas County426,2913401,255.1$60,525
39017Butler County399,542467856.4$80,066
39151Stark County374,091575650.4$63,673
39093Lorain County322,030491656.5$75,496
39165Warren County256,059401637.9$107,973
39041Delaware County237,966443537.0$128,300
39085Lake County232,3602291,012.9$73,559
39099Mahoning County225,786411548.7$52,914
39025Clermont County214,123453473.1$82,143
39155Trumbull County200,300618324.3$51,668
39089Licking County184,898682270.9$76,496
39103Medina County184,625421438.1$90,211
39057Greene County172,347414416.7$84,015
39045Fairfield County167,762504332.6$84,701
39133Portage County163,839487336.1$73,911
39023Clark County134,985396341.0$58,684
39173Wood County133,077617215.6$73,906
39139Richland County124,853495252.1$57,261
39169Wayne County116,632555210.2$69,834
39109Miami County111,950407275.3$75,735
39003Allen County100,866403250.6$65,665
39029Columbiana County99,823532187.7$55,744
39007Ashtabula County96,906702138.0$58,152
39055Geauga County95,362400238.1$99,863
39157Tuscarawas County92,048568162.2$62,098
39119Muskingum County86,582665130.3$58,806
39141Ross County76,046689110.3$61,651
39063Hancock County75,016531141.2$72,065
39043Erie County73,841251293.8$62,547
39145Scioto County71,798610117.7$52,447
39159Union County71,721432166.1$104,592
39101Marion County64,976404160.9$56,991
39013Belmont County64,692532121.6$56,716
39081Jefferson County63,900408156.6$56,276
39083Knox County63,848526121.5$66,844
39009Athens County63,218504125.5$53,616
39129Pickaway County62,158501124.0$76,471
39143Sandusky County58,866408144.2$64,744
39167Washington County58,33263292.3$59,646
39077Huron County58,168492118.2$64,331
39087Lawrence County55,829453123.1$56,879
39147Seneca County54,73055199.3$62,966
39005Ashland County52,420423123.9$66,149
39037Darke County51,46259886.0$67,609
39149Shelby County47,952408117.6$67,351
39091Logan County46,085459100.5$68,964
39011Auglaize County45,922401114.4$73,542
39097Madison County45,53146797.6$81,836
39075Holmes County44,668423105.7$74,490
39015Brown County44,29249090.5$68,289
39071Highland County43,78555379.2$61,760
39107Mercer County42,64846292.2$79,974
39051Fulton County42,028405103.7$70,724
39027Clinton County42,019409102.8$67,813
39033Crawford County41,626402103.6$58,982
39135Preble County40,80142496.2$76,621
39123Ottawa County39,692255155.8$76,582
39021Champaign County38,90742990.7$70,230
39039Defiance County38,64441193.9$72,241
39059Guernsey County38,21952273.2$54,757
39031Coshocton County37,00356465.6$57,694
39171Williams County36,55442186.9$61,183
39117Morrow County35,92740688.5$70,109
39127Perry County35,68240887.5$62,677
39137Putnam County34,20648370.9$79,412
39079Jackson County32,72342077.9$54,431
39065Hardin County30,40247064.6$59,713
39161Van Wert County28,88740970.6$60,555
39053Gallia County28,88646761.9$53,956
39047Fayette County28,78240670.8$63,348
39001Adams County27,67158447.4$55,693
39069Henry County27,53641666.2$81,899
39073Hocking County27,42942165.1$58,018
39131Pike County27,06544061.5$54,256
39019Carroll County26,46039567.1$67,044
39105Meigs County21,49143050.0$50,127
39175Wyandot County21,39440752.6$69,913
39125Paulding County18,75541645.0$67,692
39121Noble County14,26939835.9$61,751
39067Harrison County14,04240234.9$57,050
39115Morgan County13,53241632.5$52,585
39111Monroe County13,05145628.6$54,285
39163Vinton County12,54541230.4$52,999

Download all 88 counties as CSV

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 Gazetteer, places
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.