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What are the fastest-growing counties in Ohio?

Union County (+16.5%), Delaware County (+12.5%) and Pickaway County (+7.4%) grew fastest in Ohio between 2020 and 2025.

Ohio as a whole grew 0.9% between 2020 and 2025, to 11,900,510 residents.

Data as of 2025 · updated

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All 88 Ohio counties ranked

Ohio counties by population growth
RankCountyResidents 2025Change 2020–25Net migration per 1,000, 2025New homes per 1,000, 2025
1Union County73,446+16.5%13.613.2
2Delaware County242,032+12.5%15.48.3
3Pickaway County62,978+7.4%12.56.4
4Madison County46,985+7.1%26.08.9
5Fairfield County169,752+6.5%10.46.8
6Warren County257,181+5.7%3.55.6
7Clermont County216,977+3.9%10.56.9
8Licking County185,564+3.8%5.40.8
9Morrow County36,305+3.7%7.12.7
10Greene County174,322+3.7%10.73.3
11Miami County112,634+3.4%6.73.0
12Lorain County323,219+3.1%6.83.3
13Franklin County1,361,536+2.8%−5.37.7
14Butler County400,128+2.4%0.22.6
15Knox County64,002+1.9%5.84.2
16Holmes County44,970+1.7%−6.00.3
17Coshocton County37,188+1.6%4.00.3
18Brown County44,397+1.6%7.83.2
19Adams County27,865+1.5%8.80.7
20Wood County134,176+1.5%6.31.2
21Medina County185,025+1.3%3.72.3
22Athens County63,197+1.3%0.52.8
23Perry County35,918+1.3%6.31.1
24Noble County14,276+1.3%2.51.2
25Highland County43,823+1.1%3.20.3
26Hamilton County838,418+1.0%−5.51.4
27Portage County163,404+1.0%1.11.3
28Muskingum County87,014+0.7%9.62.3
29Clinton County42,301+0.6%4.52.4
30Mercer County42,737+0.5%−0.91.9
31Montgomery County539,598+0.5%3.12.0
32Jackson County32,817+0.4%2.30.9
33Logan County46,302+0.4%5.22.6
34Van Wert County29,013+0.3%2.21.6
35Geauga County95,676+0.3%5.01.9
36Champaign County38,820+0.2%4.31.2
37Hancock County75,034+0.1%1.64.8
38Ashland County52,523+0.1%1.41.3
39Defiance County38,292+0.1%−0.51.2
40Pike County27,061−0.0%1.12.3
41Putnam County34,380−0.0%2.92.6
42Richland County124,893−0.1%0.20.9
43Wayne County116,758−0.1%−0.82.0
44Guernsey County38,379−0.1%3.41.1
45Lake County232,217−0.1%1.81.8
46Stark County373,771−0.2%2.61.7
47Shelby County48,065−0.2%−0.76.4
48Henry County27,598−0.2%3.70.7
49Summit County538,376−0.3%1.81.0
50Crawford County41,896−0.3%10.50.1
51Sandusky County58,655−0.4%1.80.5
52Clark County135,340−0.4%−6.72.9
53Huron County58,250−0.4%−0.31.6
54Marion County65,115−0.4%5.80.9
55Paulding County18,727−0.4%−3.91.5
56Gallia County29,072−0.5%6.40.2
57Darke County51,520−0.7%0.91.1
58Ashtabula County96,713−0.8%2.91.7
59Ross County76,429−0.8%8.60.8
60Preble County40,664−0.8%1.91.1
61Tuscarawas County92,373−0.9%0.30.7
62Morgan County13,626−0.9%5.91.7
63Seneca County54,522−1.0%−2.41.5
64Carroll County26,475−1.1%0.90.0
65Auglaize County45,909−1.2%−0.22.1
66Allen County100,881−1.2%−2.11.6
67Vinton County12,645−1.2%8.80.6
68Trumbull County198,972−1.3%0.50.6
69Wyandot County21,567−1.4%−1.30.6
70Fayette County28,552−1.4%−1.92.8
71Williams County36,549−1.4%−1.31.2
72Mahoning County224,706−1.4%2.50.8
73Lucas County423,347−1.7%−3.10.6
74Fulton County41,853−1.9%−5.11.4
75Hocking County27,512−1.9%4.90.6
76Ottawa County39,481−2.0%−0.54.1
77Hardin County30,072−2.1%−5.50.8
78Washington County58,389−2.1%0.50.1
79Columbiana County99,377−2.2%2.10.6
80Cuyahoga County1,232,925−2.4%−3.41.5
81Jefferson County63,597−2.4%3.00.0
82Meigs County21,587−2.6%7.00.0
83Monroe County12,994−2.7%1.20.0
84Belmont County64,434−2.8%2.40.0
85Erie County73,296−2.9%−1.82.2
86Harrison County14,070−3.0%4.00.1
87Scioto County71,365−3.4%−1.80.1
88Lawrence County55,710−4.2%2.90.4

Ranked by the change in Census Bureau population estimates, 2020–2025.

Statewide totals

More county rankings for Ohio

Metro areas

Fastest-growing metro areas in Ohio · Fastest-growing metro areas in the U.S. · Largest metro areas in Ohio

Every U.S. metro and micro area

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Questions

Is Ohio growing?

Ohio as a whole grew 0.9% between 2020 and 2025, to 11,900,510 residents. Statewide figures add up its counties.

What is the fastest-growing county in Ohio?

Union County, which grew 16.5% between 2020 and 2025 to 73,446 residents (Census Bureau population estimates). Delaware County (+12.5%) and Pickaway County (+7.4%) came next.

Which Ohio counties are losing population?

49 of the 88 ranked counties had fewer residents in 2025 than in 2020. The steepest declines: Lawrence County (−4.2%), Scioto County (−3.4%), Harrison County (−3.0%).

Where are people moving in Ohio?

For their size, Madison County (26.0 per 1,000 residents), Delaware County (15.4 per 1,000 residents) and Union County (13.6 per 1,000 residents) drew the most net domestic migration (people moving in from other U.S. counties minus people moving out) in 2025.

Fastest-growing counties in other states

Across the U.S.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.