Herndon Population

1880–2026

25,649

2026 projection

4.3% since 2020 (increase)

05K10K15K20K25K30K18801900192019401960198020002020

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 Herndon. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202625,649+1430.56%
202525,506+3491.39%
202425,157+1860.74%
202324,971+7853.25%
202224,186-1880.77%
202124,374-2110.86%
202024,585-1240.50%
201924,709+1890.77%
201824,520-290.12%
201724,549+340.14%

Showing 10 of 30 years.

Herndon Demographics

35.1median age

Median age

Female34.9 yrs
Male35.3 yrs

Adults

18,938
2,439 seniors · 13%16,499 other adults

Sex

Female 48.2% · 11,893Male 51.8% · 12,779

Population by age

MaleFemale85+ years, male: 6185+ years, female: 6880–84 years, male: 6480–84 years, female: 15775–79 years, male: 18875–79 years, female: 39570–74 years, male: 32270–74 years, female: 29565–69 years, male: 47665–69 years, female: 41360–64 years, male: 54460–64 years, female: 52855–59 years, male: 82355–59 years, female: 68850–54 years, male: 69750–54 years, female: 73445–49 years, male: 92945–49 years, female: 71740–44 years, male: 1,00140–44 years, female: 87635–39 years, male: 1,37535–39 years, female: 1,06530–34 years, male: 1,20130–34 years, female: 88225–29 years, male: 1,06025–29 years, female: 1,00420–24 years, male: 1,00120–24 years, female: 81615–19 years, male: 64415–19 years, female: 69410–14 years, male: 60610–14 years, female: 8055–9 years, male: 8565–9 years, female: 9520–4 years, male: 9310–4 years, female: 80485+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

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 247 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

Herndon Income

$148,000median household income

Median household income

$148,000

Half of households earn more, half earn less

Median earnings

$66,496

Typical yearly pay for a worker 25 or older.

Poverty rate

8.1%

About 1 in 12 residents

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

Herndon Marital Status

53% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married53%52%55%
Never married35%39%30%
Divorced8%6%10%
Widowed2%1%3%
Separated2%2%3%

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

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year