With 2,210 people, Colfax is a city in Iowa. This skews young, with a median age of 33.1. Four-year degrees are less common here than nationally, at 22% of adults. The typical home is worth $178,000, having more than doubled since 2000. 2% of residents were born outside the United States. Renters pay $789 a month at the median.
At a glance
Average income
median household income $79,318, near the US median
US median: $82,259
Younger
median age 33.1
US median: 38.9
Less educated
22% hold a bachelor's degree
US average: 36%
Less affordable
home values up 43%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Colfax
What changed most since 1990
White share99.1% → 93.2%(−6.0 pts)US over the same years: −17.8 pts
Population2,462 → 2,210(−10%)US over the same years: +35%
Median home value (2024 dollars)$89,763 → $178,000(+98%)US over the same years: +67%
Colfax's population equals 5.8% of Jasper County's. Its number of households without a car equals 8.9% of the county's. Its number of people who work from home equals 4.4% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)36%(50)
US avg: 26.4%
Gulf War (1990s)16.5%(23)
US avg: 24.3%
Vietnam era43.2%(60)
US avg: 33.1%
Korean War5%(7)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 139 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Colfax, decade by decade
Colfax population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
2,462
$64,274
$89,763
7.3%
2.1
2000
2,223
$74,699
$124,783
10.5%
6.0
2010
2,093
$66,566
$141,843
14.5%
5.8
2020
2,255
$86,926
$139,142
20.5%
20.0
2024
2,210
$79,318
$178,000
22.2%
16.3
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
