Waterloo Population

2010–2026

913

2026 projection

2.7% since 2020 (decrease)

02004006008001K201020122014201620182020202220242026

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 Waterloo. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026913-40.44%
2025917-60.65%
2024923+30.33%
2023920-20.22%
2022922-70.75%
2021929-90.96%
2020938+232.51%
2019915-30.33%
2018918+10.11%
2017917+20.22%

Showing 10 of 17 years.

Waterloo Demographics

38median age

Median age

Female35.7 yrs
Male42.1 yrs

Adults

775
182 seniors · 23%593 other adults

Sex

Female 51.7% · 512Male 48.3% · 478

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 10 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

Waterloo Income

$67,941median household income

Median household income

$67,941

Half of households earn more, half earn less

Median earnings

$48,182

Typical yearly pay for a worker 25 or older.

Poverty rate

7.6%

About 1 in 13 residents

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

Waterloo Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%55%54%
Never married30%31%28%
Divorced13%12%14%
Widowed3%2%4%
Separated<1%0%<1%

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