City · Iowa
Tripoli, Iowa
Tripoli, city, in Bremer County, Iowa. Tripoli had 1,208 residents on July 1, 2025 by the Census Bureau's estimate, up 1.4% since 2020; the 2020 Census counted 1,191 and the ACS 2020-2024 5-year estimates put it at 1,156 (±219). GEOID 1978915.
Residents, July 2025 estimate
1,208
Census Bureau estimate (no margin published)
2020 Census count: 1,191 · ACS 2020-2024: 1,156 ±219
Median household income
$78,324
±$7,068 (90% margin)
Iowa: $75,059
Median home value
$120,500
±$21,500 (90% margin)
Iowa: $208,000
Median gross rent
$940
±$40 (90% margin)
Iowa: $972
Where is Tripoli and what county is it in?
Tripoli is a city in Bremer County, Iowa. It covers 1.4 square miles of land, 856 residents per square mile in 2020.
Tripoli is in the Waterloo-Cedar Falls, IA metropolitan statistical area, which takes in 3 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Tripoli, and is it growing?
The Census Bureau estimates that 1,208 people lived in Tripoli on July 1, 2025, up 1.4% since 2020, in line with Iowa (+1.5%). The 2020 Census counted 1,191 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,156 (±219).
| Measure | Tripoli | Bremer County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,156 ±219 | 25,204 | no clear change |
| Households | 527 ±95 | 9,716 | no clear change |
| Average household size | 2.16 ±0.31 | 2.44 | no clear change |
| Housing units | 561 ±95 | 10,585 | no clear change |
Tripoli's population since 2000
From 1,310 in 2000 to 1,208 in 2025: down 7.8%. The 2000, 2010 and 2020 figures are census counts, each for Tripoli as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Tripoli?
The median resident of Tripoli is 47.9 years old; 17.0% are under 18 and 25.0% are 65 or older. The largest group is non-Hispanic white residents at 88.3%, then non-Hispanic residents of two or more races at 8.7%.
| Measure | Tripoli | Bremer County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 47.9 ±5.7 | 39.0 | +7.5 |
| Under 18 years | 17.0% ±6.2 pts | 22.4% | – |
| 65 years and over | 25.0% ±6.2 pts | 19.8% | – |
| Male | 45.0% ±6.7 pts | 49.8% | – |
| Hispanic or Latino (any race) | 1.4% ±1.4 pts | 2.1% | – |
| White alone, not Hispanic | 88.3% ±7.7 pts | 92.3% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±2.1 pts | 1.1% | – |
| Asian alone, not Hispanic | 0.0% ±2.1 pts | 0.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±2.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 8.7% ±7.2 pts | 2.6% | – |
| Some other race alone, not Hispanic | 1.6% ±2.9 pts | 1.0% | – |
| Born outside the United States | 0.0% ±2.1 pts | 1.6% | – |
| Speak a language other than English at home (age 5+) | 1.3% ±0.9 pts | 2.3% | – |
| Civilian veterans (age 18+) | 9.5% ±4.2 pts | 6.3% | – |
| With a disability | 13.9% ±5.4 pts | 11.5% | – |
| No health insurance coverage | 0.9% ±0.8 pts | 2.2% | – |
| High school graduate or higher (age 25+) | 96.4% ±2.4 pts | 96.2% | – |
| Bachelor's degree or higher (age 25+) | 28.7% ±9.8 pts | 36.2% | no clear change |
| Graduate or professional degree (age 25+) | 9.0% ±5.9 pts | 12.1% | – |
| Lived in the same house a year earlier | 92.6% ±3.9 pts | 88.1% | – |
| Moved from another state in the past year | 1.9% ±2.0 pts | 2.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Tripoli earn?
Half of Tripoli's 527 households earn less than $78,324 a year (±$7,068), against $86,784 in Bremer County and $75,059 in Iowa. In 2015-2019 it was $70,625 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Tripoli | Bremer County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $78,324 ±$7,068 | $86,784 | no clear change |
| Mean household income | $84,963 ±$11,181 | $108,261 | – |
| Per capita income | $39,559 ±$6,184 | $43,033 | no clear change |
| People below the poverty line | 3.3% ±2.9 pts | 7.3% | – |
| Children under 18 below the poverty line | 5.6% ±7.8 pts | 8.1% | – |
| Households receiving SNAP | 3.0% ±2.5 pts | 5.3% | – |
| Households with a computer | 93.9% ±4.5 pts | 95.2% | – |
| Households with a broadband subscription | 84.1% ±7.0 pts | 92.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Tripoli?
Owners occupy 86.9% of Tripoli's occupied homes and renters 13.1%. The median owner-occupied home is valued at $120,500 by its owner (±$21,500). The median renter pays $940 a month including utilities.
| Measure | Tripoli | Bremer County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $120,500 ±$21,500 | $219,600 | no clear change |
| Median gross rent | $940 ±$40 | $921 | +$257 |
| Renters paying 35% or more of income on rent | 9.2% ±12.0 pts | 25.1% | – |
| Median monthly owner costs, with a mortgage | $1,014 ±$95 | $1,586 | – |
| Owner-occupied homes | 86.9% ±6.4 pts | 79.7% | +9.4 pts |
| Renter-occupied homes | 13.1% ±6.4 pts | 20.3% | – |
| Housing units | 561 ±95 | 10,585 | no clear change |
| Homeowner vacancy rate | 1.3% ±1.6 pts | 0.6% | – |
| Rental vacancy rate | 0.0% ±27.7 pts | 5.6% | – |
| Single-family detached homes | 84.5% ±7.3 pts | 80.9% | – |
| Mobile homes | 0.0% ±4.4 pts | 1.6% | – |
| Built 2020 or later | 0.0% ±4.4 pts | 0.9% | – |
| Built 2010 to 2019 | 3.9% ±3.9 pts | 10.4% | – |
| Built 1939 or earlier | 43.0% ±9.0 pts | 28.2% | – |
| Households with no vehicle | 2.3% ±2.0 pts | 2.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Tripoli work and get to work?
88.0% of Tripoli's workers drive alone and 5.1% work from home. The average trip to work takes 26.7 minutes.
| Measure | Tripoli | Bremer County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 60.5% ±8.7 pts | 66.1% | – |
| Unemployment rate | 3.1% ±2.9 pts | 3.3% | – |
| Drove alone to work | 88.0% ±5.5 pts | 75.0% | – |
| Carpooled | 2.5% ±2.4 pts | 7.1% | – |
| Public transportation | 0.0% ±4.1 pts | 0.0% | – |
| Walked | 2.0% ±2.2 pts | 5.9% | – |
| Worked from home | 5.1% ±3.2 pts | 11.3% | no clear change |
| Mean travel time to work | 26.7 min ±3.1 | 20.1 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Tripoli?
No census tract lies mostly in Tripoli; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 44Bremer County | 2,784 | $91,555 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Tripoli) · Census block assignment files
How does Tripoli compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Tripoli is the 9,572nd-most populous of the 19,476 U.S. incorporated places that have one and the 239th-most populous of 939 in Iowa.
Tripoli ranks 96th of 279 places in Iowa with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 239th | 939 |
| Growth 2020-2025 (PEP) | 84th | 275 |
| Residents per square mile | 196th | 279 |
| Median household income | 96th | 279 |
| Per capita income | 103rd | 279 |
| Median home value | 229th | 279 |
| Median gross rent | 77th | 266 |
| Bachelor's degree or higher | 94th | 279 |
| Median age | 21st | 279 |
| Owner-occupied share | 27th | 279 |
| Work from home | 194th | 221 |
| Travel time to work | 22nd | 279 |
Tripoli's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Tripoli with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Tripoli?
25 of the 57 figures for Tripoli on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Tripoli are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Tripoli.