Washington County Population

1830–2026

275.06K

2026 projection

11.5% since 2020 (increase)

050K100K150K200K250K300K1850190019502000

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.
2026275,056+3,8431.42%
2025271,213+3,8431.44%
2024267,370+5,7572.20%
2023261,613+4,4071.71%
2022257,206+5,5172.19%
2021251,689+4,9332.00%
2020246,756+7,3643.08%
2019239,392+2,5371.07%
2018236,855+3,9401.69%
2017232,915+4,3031.88%

Showing 10 of 34 years.

Washington County Demographics

32.5median age

Median age

Female33.5 yrs
Male31.8 yrs

Adults

196,461
31,687 seniors (65+) · 16% of adults164,774 other adults

Sex

Female 49.7% · 127,682Male 50.3% · 129,083

Population by age

MaleFemale85+ years, male: 1,21485+ years, female: 1,65680–84 years, male: 1,47680–84 years, female: 2,10475–79 years, male: 2,55275–79 years, female: 3,61970–74 years, male: 3,86970–74 years, female: 4,33865–69 years, male: 5,10265–69 years, female: 5,75760–64 years, male: 6,22960–64 years, female: 5,93455–59 years, male: 6,43555–59 years, female: 7,00450–54 years, male: 6,89050–54 years, female: 6,74445–49 years, male: 7,66845–49 years, female: 7,24240–44 years, male: 8,66240–44 years, female: 9,01335–39 years, male: 8,84535–39 years, female: 7,87330–34 years, male: 9,36430–34 years, female: 8,86425–29 years, male: 10,20325–29 years, female: 9,68920–24 years, male: 13,64620–24 years, female: 12,80515–19 years, male: 11,38615–19 years, female: 10,72510–14 years, male: 8,85310–14 years, female: 8,2235–9 years, male: 8,4145–9 years, female: 8,2910–4 years, male: 8,2750–4 years, female: 7,80185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K

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 2,568 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

$70,639median household income

Median household income

$70,639

Half of households earn more, half earn less

Median earnings

$47,324

Typical yearly pay for a worker 25 or older.

Poverty rate

14.6%

About 1 in 7 residents

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

Washington County Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%48%46%
Never married37%40%34%
Divorced10%8%12%
Widowed5%2%7%
Separated2%1%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