Spencer Population

2011–2026

5,478

2026 projection

5.7% since 2020 (decrease)

01K2K3K4K5K6K20122014201620182020202220242026

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 Spencer. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20265,478-140.25%
20255,492-280.25%
20235,520-1172.08%
20225,637-1061.85%
20215,743-671.15%
20205,810+180.31%
20195,792+871.52%
20185,705-1161.99%
20175,821+310.54%
20165,790+2123.80%

Showing 10 of 15 years.

Spencer Demographics

53.4median age

Median age

Female56.8 yrs
Male47.8 yrs

Adults

4,981
1,479 seniors · 30%3,502 other adults

Sex

Female 47.9% · 2,711Male 52.1% · 2,950

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 57 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

Spencer Income

$59,931median household income

Median household income

$59,931

Half of households earn more, half earn less

Median earnings

$43,734

Typical yearly pay for a worker 25 or older.

Poverty rate

15.8%

About 1 in 6 residents

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

Spencer Marital Status

35% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married35%32%39%
Never married36%49%21%
Divorced19%10%30%
Widowed7%5%9%
Separated2%4%<1%

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