Washington County Population

1790–2026

158.32K

2026 projection

2.3% since 2020 (increase)

050K100K150K200K18001850190019502000

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.
2026158,322+5910.37%
2025157,731+5910.38%
2024157,140+1,7031.10%
2023155,437+9340.60%
2022154,503+780.05%
2021154,425-2740.18%
2020154,699+3,6332.40%
2019151,066+3670.24%
2018150,699+4520.30%
2017150,247+5320.36%

Showing 10 of 38 years.

Washington County Demographics

40.7median age

Median age

Female42 yrs
Male39.4 yrs

Adults

121,839
28,153 seniors (65+) · 23% of adults93,686 other adults

Sex

Female 49.2% · 76,620Male 50.8% · 79,089

Population by age

MaleFemale85+ years, male: 1,17785+ years, female: 2,16480–84 years, male: 1,53080–84 years, female: 1,79575–79 years, male: 2,08475–79 years, female: 3,07470–74 years, male: 3,34870–74 years, female: 3,98065–69 years, male: 4,61365–69 years, female: 4,38860–64 years, male: 4,94560–64 years, female: 5,11055–59 years, male: 5,40755–59 years, female: 5,51150–54 years, male: 5,41750–54 years, female: 5,02145–49 years, male: 4,97245–49 years, female: 4,45540–44 years, male: 5,25340–44 years, female: 4,76635–39 years, male: 5,61835–39 years, female: 4,66030–34 years, male: 5,30530–34 years, female: 4,77825–29 years, male: 5,25825–29 years, female: 4,58020–24 years, male: 5,13420–24 years, female: 4,10715–19 years, male: 5,09015–19 years, female: 4,49910–14 years, male: 4,76110–14 years, female: 4,8895–9 years, male: 4,9065–9 years, female: 4,5890–4 years, male: 4,2710–4 years, female: 4,25485+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 1,557 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

$77,747median household income

Median household income

$77,747

Half of households earn more, half earn less

Median earnings

$53,340

Typical yearly pay for a worker 25 or older.

Poverty rate

12.4%

About 1 in 8 residents

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

Washington County Marital Status

46% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married46%45%46%
Never married34%39%29%
Divorced12%10%13%
Widowed7%3%10%
Separated2%3%2%

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