Spencer Population

1910–2026

3,478

2026 projection

4.8% since 2020 (increase)

05001K1.5K2K2.5K3K3.5K192019401960198020002020

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.
20263,478+280.81%
20253,450+200.58%
20243,430+250.73%
20233,405+571.70%
20223,348+290.87%
20213,319+10.03%
20203,318+662.03%
20193,252+140.43%
20183,238+20.06%
20173,236+100.31%

Showing 10 of 27 years.

Spencer Demographics

44.2median age

Median age

Female42 yrs
Male46.4 yrs

Adults

2,712
784 seniors · 29%1,928 other adults

Sex

Female 48.5% · 1,624Male 51.5% · 1,725

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 33 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

$65,465median household income

Median household income

$65,465

Half of households earn more, half earn less

Median earnings

$51,506

Typical yearly pay for a worker 25 or older.

Poverty rate

11.2%

About 1 in 9 residents

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

Spencer Marital Status

42% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married42%43%41%
Never married38%41%35%
Divorced11%14%8%
Widowed9%2%16%
Separated<1%0%<1%

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