Washington County Population

1840–2026

139.73K

2026 projection

2.1% since 2020 (increase)

020K40K60K80K100K120K140K1840186018801900192019401960198020002020

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 Washington County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026139,732+4940.35%
2025139,238+4940.36%
2024138,744+2170.16%
2023138,527+4650.34%
2022138,062+6670.49%
2021137,395+5890.43%
2020136,806+5040.37%
2019136,302+6870.51%
2018135,615+6540.48%
2017134,961+6370.47%

Showing 10 of 33 years.

Washington County Demographics

43.8median age

Median age

Female44.6 yrs
Male43.2 yrs

Adults

108,954
27,367 seniors (65+) · 25% of adults81,587 other adults

Sex

Female 50.1% · 69,013Male 49.9% · 68,866

Population by age

MaleFemale85+ years, male: 1,24085+ years, female: 1,93680–84 years, male: 1,16080–84 years, female: 1,74275–79 years, male: 2,37175–79 years, female: 2,44870–74 years, male: 3,49370–74 years, female: 3,99065–69 years, male: 4,51965–69 years, female: 4,46860–64 years, male: 5,20960–64 years, female: 5,68955–59 years, male: 5,86855–59 years, female: 5,13450–54 years, male: 4,78550–54 years, female: 4,83745–49 years, male: 4,24145–49 years, female: 3,93340–44 years, male: 4,37340–44 years, female: 3,97835–39 years, male: 4,56535–39 years, female: 4,60130–34 years, male: 3,95230–34 years, female: 3,66525–29 years, male: 3,62225–29 years, female: 3,20020–24 years, male: 3,58920–24 years, female: 3,41615–19 years, male: 4,33615–19 years, female: 4,17410–14 years, male: 4,52210–14 years, female: 4,8235–9 years, male: 3,7955–9 years, female: 3,5530–4 years, male: 3,2260–4 years, female: 3,42685+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

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 1,379 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

Washington County Income

$96,359median household income

Median household income

$96,359

Half of households earn more, half earn less

Median earnings

$61,392

Typical yearly pay for a worker 25 or older.

Poverty rate

5.8%

About 1 in 17 residents

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

Washington County Marital Status

58% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married58%59%57%
Never married27%30%24%
Divorced9%8%11%
Widowed6%3%8%
Separated<1%<1%<1%

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

Sources

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

Population

American Community Survey, 2024 5-year