Amherst County, Virginia

County seat: Amherst · Population 31,962 (2025) · 474 sq mi

Amherst County is the 57th most populous of Virginia's 133 counties, with 31,962 people (2025 estimate). Its county seat is Amherst. It is part of the Central Virginia Planning District Commission (PD 11) region, one of the 21 Planning District Commissions of Virginia. The map shows its 1 city or town and the 6 neighboring counties.

Map of Amherst County, Virginia with cities, towns and the county boundary
Amherst County, Virginia with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Amherst County facts

County seat
Amherst
Population (2025 estimate)
31,962 +2.1% since 2020
Land area
474 sq mi 30th largest of 133
Water area
5 sq mi
Population density
67 per sq mi
Established
1761
Named after
Jeffery Amherst, 1st Baron Amherst British Army officer (1717–1797)
Largest city
Madison Heights 10,266
Median household income
$68,724
Cities and towns
1 plus 1 CDPs
ZIP codes
9
Time zone
Eastern
FIPS code
51009

Cities and towns in Amherst County

Amherst County has 1 incorporated place. Populations count the people living inside Amherst County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Amherst (county seat)Town2,146

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Madison Heights10,266

ZIP codes in Amherst County

9 ZIP codes reach into Amherst County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Amherst County, 2020–2025

Amherst County grew by 649 people (+2.1%) between April 2020 and July 2025: 576 more deaths than births and a net gain of 1,206 people from migration.

Year (July 1)Population
202031,312
202131,403
202231,525
202331,557
202431,653
202531,962

Neighboring counties

Printable Amherst County map

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Sources

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