Watertown Population

2011–2026

4,363

2026 projection

20.5% since 2020 (increase)

01K2K3K4K5K20122014201620182020202220242026

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 Watertown. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20264,363+491.14%
20254,314+991.17%
20234,215+45011.95%
20223,765+1654.58%
20213,600-200.55%
20203,620+2708.06%
20193,350+260.78%
20183,324-2847.87%
20173,608+2577.67%
20163,351+35511.85%

Showing 10 of 15 years.

Watertown Demographics

43.9median age

Median age

Female45.8 yrs
Male43.2 yrs

Adults

2,981
710 seniors · 24%2,271 other adults

Sex

Female 46.4% · 1,807Male 53.6% · 2,090

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 39 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

Watertown Income

$103,200median household income

Median household income

$103,200

Half of households earn more, half earn less

Median earnings

$65,778

Typical yearly pay for a worker 25 or older.

Poverty rate

13.2%

About 1 in 8 residents

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

Watertown Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%52%61%
Never married28%32%23%
Divorced10%13%6%
Widowed7%4%11%
Separated0%0%0%

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