Waterloo Population

2010–2026

183

2026 projection

1.1% since 2020 (increase)

050100150200250201020122014201620182020202220242026

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.
202618300.00%
2025183-10.54%
2024184+21.10%
202318200.00%
202218200.00%
2021182+10.55%
2020181-168.12%
201919700.00%
2018197-41.99%
2017201+10.50%

Showing 10 of 17 years.

Waterloo Demographics

64.1median age

Median age

Female62.6 yrs
Male64.6 yrs

Adults

107
49 seniors · 46%58 other adults

Sex

Female 51.3% · 58Male 48.7% · 55

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 1 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 Marital Status

53% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married53%53%53%
Never married13%18%9%
Divorced20%26%16%
Widowed14%4%23%
Separated0%0%0%

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