Accomack County area

Population and density of Accomack County

The Census Bureau estimates that 33,859 people lived in Accomack County on July 1, 2025. That ranks #1,382 of 3,222 county equivalents nationally and #52 of 133 in Virginia. Since the April 1, 2020 estimates base of 33,423, the population has grown by 436 (+1.3%), compared with +2.9% for Virginia as a whole.

With 449.3 square miles of land, that is 75 people per square mile (29 per km²), placing Accomack County #1,206 nationally for density and #84 in Virginia. The median county equivalent has 47 people per square mile; the Virginia median is 109. Put another way, there are about 8.5 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 Accomack County

14 incorporated places lie at least partly in Accomack County. Together they are home to 9,134 people (27%); the other 24,725 (73%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Chincoteague town, with 3,309 residents in the county. The county seat, Accomac town, has 522 residents. Among places with at least 1,000 residents in 2020, Onancock town grew fastest since then (+0.7%).

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

Metropolitan area

Accomack County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

33 ZIP Code Tabulation Areas have land in Accomack County, and each lies mostly inside the county.

233012330223303233062330823336233372335623357233582335923389233952340123407234092341023414234152341623417234182342023421234222342323426234272344023441234422348023488

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Accomack County

Accomack County shares a land border with 3 county equivalents, including 2 in Maryland. It has more land than 2 of them. The largest neighbor is Worcester County (468.3 mi²) and the smallest is Northampton County (211.7 mi²). Together with its neighbors, Accomack County forms a block of 1,449.1 mi² of land, of which it holds 31%.

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

Accomack County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.3 times as much. Virginia’s county land could hold about 88 areas the size of Accomack County.

Another way to picture it: the same land area would fill a square about 21.2 miles (34.1 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 Accomack County?

Accomack County has more land than 950 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 Accomack County at #523 nationally by total area, 1,749 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 65.7%, compared with a national county-equivalent median of 1.2% — 64.5 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 Accomack 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.