Summit County area

Population and density of Summit County

The Census Bureau estimates that 538,376 people lived in Summit County on July 1, 2025. That ranks #139 of 3,222 county equivalents nationally and #5 of 88 in Ohio. Since the April 1, 2020 estimates base of 540,429, the population has declined by 2,053 (−0.4%), compared with +0.9% for Ohio as a whole.

With 412.7 square miles of land, that is 1,305 people per square mile (504 per km²), placing Summit County #137 nationally for density and #4 in Ohio. The median county equivalent has 47 people per square mile; the Ohio median is 120. Put another way, there are about 0.491 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Summit County

22 incorporated places lie at least partly in Summit County. Together they are home to 461,462 people (85.7%); the other 76,914 (14.3%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Akron city, with 189,691 residents in the county. Among places with at least 1,000 residents in 2020, Northfield village grew fastest since then (+2.1%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Summit County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Summit County is a central county of the Akron, OH Metropolitan Statistical Area. Its 2 county equivalents have 701,780 residents on 900.1 square miles of land; Summit County accounts for 45.8% of the land and 76.7% of the residents. By combined land it ranks #293 of 393 metropolitan areas, and #88 by population. It belongs to the Cleveland-Akron-Canton, OH Combined Statistical Area.

ZIP codes

43 ZIP Code Tabulation Areas have land in Summit County; 34 of them have most of their land inside the county, and the others mainly cover neighboring areas.

44056440674408744141442024420344216442214422344224442304423244236442404425044260442624426444278442814428644301443024430344304443054430644307443084431044311443124431344314443194432044321443254433344614446454468544720

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Summit County

Summit County shares a land border with 5 county equivalents. Each of them has more land than Summit County. The largest neighbor is Stark County (574.9 mi²) and the smallest is Medina County (421.5 mi²). Together with its neighbors, Summit County forms a block of 2,908.8 mi² of land, of which it holds 14.2%.

How big is Summit County compared with U.S. states?

Summit County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.5 times as much. Ohio’s county land could hold about 99 areas the size of Summit County.

Another way to picture it: the same land area would fill a square about 20.3 miles (32.7 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Summit County?

Summit County has more land than 772 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Summit County at #2,492 nationally by total area, 42 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 1.7%, compared with a national county-equivalent median of 1.2% — 0.6 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Summit County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.