Westerville Population

1860–2026

37,948

2026 projection

3.2% since 2020 (decrease)

010K20K30K40K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal 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 Westerville. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202637,948-2170.57%
202538,165-2060.54%
202438,371+410.11%
202338,330-960.25%
202238,426-1890.49%
202138,615-5751.47%
202039,190+630.16%
201939,127+5901.53%
201838,537+2730.71%
201738,264+4371.16%

Showing 10 of 32 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Westerville has a population change lower than Delaware County, Ohio, and the U.S.

  • Delaware County+12.5%
  • United States+3.1%
  • Ohio+0.9%
  • Westerville−2.7%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Westerville Demographics

40.7median age

Median age

Female42.6 yrs
Male39 yrs

Adults

29,909
8,306 seniors (65+) · 28% of adults21,603 other adults

Sex

Female 52.7% · 20,373Male 47.3% · 18,272

Population by age

MaleFemale85+ years, male: 36085+ years, female: 63580–84 years, male: 32780–84 years, female: 57975–79 years, male: 60875–79 years, female: 91270–74 years, male: 1,20270–74 years, female: 1,41365–69 years, male: 1,12565–69 years, female: 1,14560–64 years, male: 97060–64 years, female: 1,12555–59 years, male: 93055–59 years, female: 1,21150–54 years, male: 1,08350–54 years, female: 1,25945–49 years, male: 1,17445–49 years, female: 1,30740–44 years, male: 1,12340–44 years, female: 1,15235–39 years, male: 1,24435–39 years, female: 1,30530–34 years, male: 1,39930–34 years, female: 1,45325–29 years, male: 1,00525–29 years, female: 70420–24 years, male: 96820–24 years, female: 89315–19 years, male: 1,15715–19 years, female: 1,53810–14 years, male: 1,32510–14 years, female: 1,3175–9 years, male: 1,0495–9 years, female: 1,2140–4 years, male: 1,2230–4 years, female: 1,21185+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 386 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

Westerville Income

$109,404median household income

Median household income

$109,404

Half of households earn more, half earn less

Median earnings

$73,592

Typical yearly pay for a worker 25 or older.

Poverty rate

5.6%

About 1 in 18 residents

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

Westerville Marital Status

57% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married57%62%54%
Never married25%27%23%
Divorced11%8%14%
Widowed6%3%9%
Separated1%1%1%

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

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources