Hempstead County Population

1820–2026

18,906

2026 projection

5.4% since 2020 (decrease)

05K10K15K20K25K30K35K1850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Hempstead County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202618,906-1740.91%
202519,080-1740.90%
202419,254-1300.67%
202319,384-690.35%
202219,453-2091.06%
202119,662-3311.66%
202019,993-1,5757.30%
201921,568-1460.67%
201821,714-1810.83%
201721,895-1520.69%

Showing 10 of 35 years.

Hempstead County Demographics

41.2median age

Median age

Female41.5 yrs
Male39.9 yrs

Adults

14,575
3,641 seniors (65+) · 25% of adults10,934 other adults

Sex

Female 51.7% · 10,092Male 48.3% · 9,416

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 195 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Hempstead County Income

$46,787median household income

Median household income

$46,787

Half of households earn more, half earn less

Median earnings

$39,310

Typical yearly pay for a worker 25 or older.

Poverty rate

20.2%

About 1 in 5 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Hempstead County Marital Status

49% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married49%54%45%
Never married29%27%30%
Divorced11%11%11%
Widowed8%5%12%
Separated3%3%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201