Harnett County area

Population and density of Harnett County

The Census Bureau estimates that 150,137 people lived in Harnett County on July 1, 2025. That ranks #466 of 3,222 county equivalents nationally and #22 of 100 in North Carolina. Since the April 1, 2020 estimates base of 133,563, the population has grown by 16,574 (+12.4%), compared with +7.2% for North Carolina as a whole.

With 595.1 square miles of land, that is 252 people per square mile (97 per km²), placing Harnett County #569 nationally for density and #24 in North Carolina. The median county equivalent has 47 people per square mile; the North Carolina median is 116. Put another way, there are about 2.5 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 Harnett County

8 incorporated places lie at least partly in Harnett County. Together they are home to 29,157 people (19.4%); the other 120,980 (80.6%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Dunn city, with 8,814 residents in the county. The county seat, Lillington town, has 5,040 residents. By land, Fuquay-Varina town is the largest at 20.1 mi² across all its counties. Among places with at least 1,000 residents in 2020, Angier town grew fastest since then (+66.6%).

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

Metropolitan area

Harnett County is a central county of the Anderson Creek, NC Micropolitan Statistical Area. Harnett County is the area’s only county equivalent, so the micro area has the same 595.1 square miles of land. By combined land it ranks #356 of 542 micropolitan areas, and #7 by population. It belongs to the Raleigh-Durham-Cary, NC Combined Statistical Area.

ZIP codes

18 ZIP Code Tabulation Areas have land in Harnett County; 11 of them have most of their land inside the county, and the others mainly cover neighboring areas.

273302733227501275042750527506275212752627540275462759228323283262833428339283562836828390

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 Harnett County

Harnett County shares a land border with 7 county equivalents. It has more land than 1 of them. The largest neighbor is Sampson County (945.9 mi²) and the smallest is Lee County (255.1 mi²). Together with its neighbors, Harnett County forms a block of 5,454.6 mi² of land, of which it holds 10.9%.

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

Harnett County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.7 times as much. North Carolina’s county land could hold about 82 areas the size of Harnett County.

Another way to picture it: the same land area would fill a square about 24.4 miles (39.3 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 Harnett County?

Harnett County has more land than 1,579 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 Harnett County at #1,739 nationally by total area, 96 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%, compared with a national county-equivalent median of 1.2% — 0.1 percentage points lower. 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 Harnett 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.