Grantham town Population

2010–2026

3,491

2026 projection

2.5% since 2020 (increase)

05001K1.5K2K2.5K3K3.5K201020122014201620182020202220242026

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 Grantham town. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20263,491+90.26%
20253,482+90.26%
20243,473-60.17%
20233,479+50.14%
20223,474+230.67%
20213,451+441.29%
20203,407+45315.34%
20192,954+40.14%
20182,950+50.17%
20172,945-10.03%

Showing 10 of 17 years.

Grantham town Demographics

50.4median age

Median age

Female50.1 yrs
Male50.8 yrs

Adults

2,803
590 seniors · 21%2,213 other adults

Sex

Female 54.3% · 1,880Male 45.7% · 1,585

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 35 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

Grantham town Income

$106,403median household income

Median household income

$106,403

Half of households earn more, half earn less

Median earnings

$78,722

Typical yearly pay for a worker 25 or older.

Poverty rate

0%

0% of residents

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

Grantham town 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%72%45%
Never married19%11%26%
Divorced16%11%20%
Widowed7%4%9%
Separated1%3%0%

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