Colfax, CA Demographics

Population 8,294 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Colfax, CA map of median age by neighborhood
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Population and households in Colfax

Household size in Colfax

Household size, people per household
PeriodColfaxSacramento areaCaliforniaU.S.
2006–102.442.763.042.68
2010–142.542.813.102.73
2015–192.562.823.092.71
2020–242.552.833.012.65
Change+0.12+0.07−0.03−0.03
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The average household in Colfax has 2.55 people, a bit under the U.S. average of 2.65. Since 2006–10, household size has climbed from 2.44, even as the national average fell.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Colfax

Median age, years
PeriodColfaxSacramento areaCaliforniaU.S.
2006–1047.536.735.837.7
2010–1446.837.636.838.6
2015–1946.938.737.939.6
2020–2447.039.639.040.1
Change−0.6+2.9+3.1+2.3
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Colfax skews older: half of its residents are older than 47.0, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has edged down from 47.5, even as the national median rose.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Colfax

Single-parent households, % of households
PeriodColfaxSacramento areaCaliforniaU.S.
2006–106.0%12.8%13.5%12.3%
2010–145.3%12.9%13.5%12.3%
2015–195.0%11.5%12.3%11.6%
2020–246.7%11.0%12.3%11.6%
Change+0.7 pts−1.7 pts−1.2 pts−0.6 pts
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Single-parent households are relatively rare in Colfax: 6.7% of households, against 11.6% nationally. Since 2006–10, the single-parent share has edged up 0.7 points, even as the national share fell. Colfax has a lower share of single-parent households than the great majority of California cities.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Colfax

Renters in Colfax

Renters, % of occupied homes
PeriodColfaxSacramento areaCaliforniaU.S.
2006–1020.3%37.3%42.6%33.3%
2010–1426.7%40.4%45.2%35.6%
2015–1926.0%39.7%45.2%36.0%
2020–2423.8%37.0%44.1%34.8%
Change+3.4 pts−0.3 pts+1.5 pts+1.5 pts
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Colfax is largely a place of homeowners: only 23.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 37.8% have no mortgage at all, about the same as nationally. The renter share is up 3.4 points from 2006–10, as it has nationally.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Colfax

Vacant homes, % of all homes
PeriodColfaxSacramento areaCaliforniaU.S.
2006–109.2%9.3%8.7%11.4%
2010–1413.1%8.7%8.1%11.4%
2015–1910.1%6.7%7.5%11.1%
2020–249.5%6.7%7.3%9.6%
Change+0.4 pts−2.6 pts−1.4 pts−1.8 pts
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Vacancy in Colfax is close to the national rate: 9.5% of homes are empty, against 9.6%. The rate is higher than in the Sacramento area overall (6.7%).

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Colfax

Age of homes, median year built
PeriodColfaxSacramento areaCaliforniaU.S.
2006–101981198019721974
2010–141981198119731975
2015–191981198219741977
2020–241984198519761980
Change+3+5+4+6
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The housing in Colfax is a little younger than the country's: half of it was built after 1984, against 1980 nationally. The median year built has moved up from 1981 in 2006–10, a sign of steady new building. The newest homes are mostly in the center, the oldest in the north.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Colfax

Rent, per month
PeriodColfaxSacramento areaCaliforniaU.S.
2006–10$1,168$1,199$1,298$965
2010–14$1,077$1,254$1,379$1,040
2015–19$1,297$1,488$1,721$1,213
2020–24$1,614$2,018$2,229$1,571
Change+$447+$818+$931+$606
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The median renter in Colfax pays $1,614 a month for rent and utilities, close to the national median of $1,571. Rents here are lower than in the wider Sacramento area ($2,018). Rent has climbed $447 a month since 2006–10, up 38%, a slower climb than the nation's. The typical renter here spends 33.1% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Colfax

Bachelor's degrees in Colfax

Bachelor's degrees, % of adults 25+
PeriodColfaxSacramento areaCaliforniaU.S.
2006–1028.4%30.1%29.1%28.4%
2010–1424.7%30.6%30.1%29.6%
2015–1926.0%33.6%32.9%32.1%
2020–2429.1%37.4%36.3%35.6%
Change+0.8 pts+7.2 pts+7.1 pts+7.2 pts
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About three in ten adults 25 and older in Colfax (29.1%) have a bachelor's degree or higher, below the national share of 35.6%. Since 2006–10, the share with a degree has edged up 0.8 points, a smaller shift than nationally. College graduates are most concentrated in the west and least in the south.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Colfax

High school graduates, % of adults 25+
PeriodColfaxSacramento areaCaliforniaU.S.
2006–1094.7%86.8%79.9%84.9%
2010–1495.0%87.6%80.7%86.1%
2015–1995.3%89.0%82.6%87.7%
2020–2493.8%89.9%84.2%89.3%
Change−0.9 pts+3.1 pts+4.3 pts+4.3 pts
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High school completion in Colfax is above the national rate: 93.8% of adults have a diploma or equivalent, against 89.3%. The share with a diploma has edged down 0.9 points since 2006–10, even as the national rate rose.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Colfax

Unemployment, % of the labor force
PeriodColfaxSacramento areaCaliforniaU.S.
2006–106.3%9.7%9.2%8.1%
2010–1411.7%12.4%11.3%9.4%
2015–194.1%6.1%6.3%5.6%
2020–247.8%6.2%6.6%5.4%
Change+1.5 pts−3.5 pts−2.6 pts−2.7 pts
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Finding work has been harder in Colfax: 7.8% of the labor force was out of work and looking, well above the national rate of 5.4%. Unemployment has edged up 1.5 points since 2006–10, even as the national rate fell. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Colfax compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Colfax2.5547.06.7%23.8%9.5%1984$1,61429.1%93.8%7.8%
Shady Glen2.4051.16.2%17.3%7.2%1984$1,42833.9%95.2%9.0%
Weimar2.4449.85.3%24.6%4.3%1985$1,62622.7%96.1%13.4%
Heather Glen2.7946.44.5%15.0%4.8%1980$1,57831.8%92.8%3.6%
Magra2.5150.76.7%14.0%15.6%1989$1,75218.6%77.5%5.4%
Alta Sierra2.4149.76.3%13.2%5.7%1983$1,92738.2%96.4%3.4%
Applegate2.6549.34.0%17.5%5.2%1978$1,42527.3%89.9%4.6%
Meadow Vista2.5357.93.7%9.5%10.3%1980$2,11341.4%96.1%2.8%
Foresthill2.5244.011.7%11.4%3.8%1984$2,04721.5%94.3%5.6%
Iowa Hill2.2467.88.8%44.9%9.2%1974$1,81443.3%100.0%0.0%
Grass Valley2.3550.210.3%34.0%9.4%1978$1,64432.8%94.0%7.0%

All figures 2020–24.

Cities with similar populations: Hilliard, FL · Rockwood, VA · Riviera Beach, MD · Riverside, CT · Lake Hopatcong, NJ · Lagrange, IN · La Trocha, PR · La Junta, CO · Kingston, WA · Jefferson, WI

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Colfax. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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