Census tract · Butte County
Census Tract 31, Butte County, California
Census Tract 31, GEOID 06007003100, in Butte County, California, mostly within Oroville East (85% of its census blocks). 4,597 residents in the ACS 2020-2024 5-year estimates (±687); the 2020 Census counted 4,575.
Residents, 2020-2024
4,597
±687 (90% margin)
2020 Census count: 4,575
Median household income
$96,125
±$23,971 (90% margin)
Butte County: $67,928
Median home value
$404,400
±$33,377 (90% margin)
Butte County: $424,700
Median gross rent
$946
±$399 (90% margin)
Butte County: $1,414
Where is Census Tract 31?
Census Tract 31 is one of 54 census tracts in Butte County, California. It covers 4.76 square miles of land, 962 residents per square mile in 2020. Its GEOID, 06007003100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Oroville East | 85% |
| Oroville | 15% |
7 census tracts border Census Tract 31: Tract 26.01 ($83,382), Tract 26.02 ($61,583), Tract 27 ($68,071), Tract 30.01 ($49,983), Tract 30.02 ($65,072), Tract 32 ($44,726) and Tract 33 ($76,858). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 31?
The 2020-2024 American Community Survey puts Census Tract 31's population at 4,597 (±687) in 1,652 households; the 2020 Census counted 4,575 residents and 1,806 housing units.
| Measure | Tract 31 | Oroville East |
|---|---|---|
| Total population | 4,597 ±687 | 7,504 |
| Households | 1,652 ±209 | 3,014 |
| Average household size | 2.74 ±0.25 | 2.48 |
| Housing units | 1,770 ±182 | 3,292 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 31?
The median resident of Census Tract 31 is 37.7 years old; 26.6% are under 18 and 21.4% are 65 or older. The largest group is non-Hispanic white residents at 72.7%, then Hispanic or Latino residents (of any race) at 14.6%. 3.0% of residents were born outside the United States.
| Measure | Tract 31 | Oroville East |
|---|---|---|
| Median age | 37.7 ±6.3 | 42.5 |
| Under 18 years | 26.6% ±5.3 pts | 23.0% |
| 65 years and over | 21.4% ±5.9 pts | 26.1% |
| Hispanic or Latino (any race) | 14.6% ±7.0 pts | 15.6% |
| White alone, not Hispanic | 72.7% ±7.1 pts | 71.5% |
| Black or African American alone, not Hispanic | 0.0% ±0.9 pts | 0.0% |
| Asian alone, not Hispanic | 3.5% ±2.0 pts | 2.1% |
| American Indian and Alaska Native alone, not Hispanic | 2.5% ±1.9 pts | 2.4% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.6% ±1.0 pts | 0.5% |
| Two or more races, not Hispanic | 4.3% ±1.6 pts | 6.6% |
| Some other race alone, not Hispanic | 1.8% ±1.9 pts | 1.2% |
| Born outside the United States | 3.0% ±1.4 pts | 3.2% |
| Speak a language other than English at home (age 5+) | 6.5% ±3.7 pts | 5.5% |
| Civilian veterans (age 18+) | 11.8% ±4.2 pts | 12.9% |
| With a disability | 13.9% ±3.2 pts | 18.0% |
| No health insurance coverage | 9.1% ±4.2 pts | 6.3% |
| High school graduate or higher (age 25+) | 93.8% ±2.6 pts | 93.1% |
| Bachelor's degree or higher (age 25+) | 20.7% ±5.4 pts | 22.7% |
| Graduate or professional degree (age 25+) | 6.1% ±3.1 pts | 7.9% |
| Lived in the same house a year earlier | 85.0% ±7.1 pts | 89.0% |
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 Census Tract 31 earn?
Half of the 1,652 households in Census Tract 31 earn less than $96,125 a year (±$23,971), against $67,928 across Butte County: 11th highest of the county's 52 tracts with a reliable estimate. 10.4% of residents live below the poverty line.
| Measure | Tract 31 | Oroville East |
|---|---|---|
| Median household income | $96,125 ±$23,971 | $94,512 |
| Mean household income | $129,530 ±$20,183 | $125,236 |
| Per capita income | $45,328 ±$7,676 | $50,049 |
| People below the poverty line | 10.4% ±4.4 pts | 8.7% |
| Children under 18 below the poverty line | 14.2% ±12.4 pts | 11.4% |
| Households receiving SNAP | 9.6% ±4.9 pts | 9.1% |
| Households with a computer | 95.5% ±2.5 pts | 96.0% |
| Households with a broadband subscription | 83.0% ±6.8 pts | 90.1% |
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 Census Tract 31?
Owners occupy 80.4% of Census Tract 31's occupied homes and renters 19.6%. The median owner-occupied home is valued at $404,400 by its owner (±$33,377). The median renter pays $946 a month including utilities, and 27.1% of renters pay 35% or more of their income on rent.
| Measure | Tract 31 | Oroville East |
|---|---|---|
| Median home value (owner-occupied) | $404,400 ±$33,377 | $405,400 |
| Median gross rent | $946 ±$399 | $1,211 |
| Renters paying 35% or more of income on rent | 27.1% ±17.7 pts | 33.2% |
| Median monthly owner costs, with a mortgage | $2,200 ±$310 | $2,123 |
| Owner-occupied homes | 80.4% ±7.6 pts | 85.5% |
| Renter-occupied homes | 19.6% ±7.6 pts | 14.5% |
| Housing units | 1,770 ±182 | 3,292 |
| Single-family detached homes | 85.4% ±6.2 pts | 83.6% |
| Mobile homes | 8.5% ±5.4 pts | 14.8% |
| Built 2020 or later | 0.0% ±2.4 pts | 0.2% |
| Built 2010 to 2019 | 0.9% ±1.1 pts | 0.9% |
| Built 1939 or earlier | 0.5% ±0.8 pts | 0.9% |
| Households with no vehicle | 2.5% ±2.1 pts | 2.4% |
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 Census Tract 31 get to work?
80.3% of Census Tract 31's workers drive alone and 12.9% work from home. The average trip to work takes 21.4 minutes. The unemployment rate in 2020-2024 averaged 8.3%.
| Measure | Tract 31 | Oroville East |
|---|---|---|
| In the labor force (age 16+) | 63.6% ±6.1 pts | 57.0% |
| Unemployment rate | 8.3% ±4.2 pts | 12.4% |
| Drove alone to work | 80.3% ±7.9 pts | 77.4% |
| Carpooled | 6.5% ±4.4 pts | 9.0% |
| Public transportation | 0.0% ±2.3 pts | 0.0% |
| Walked | 0.3% ±0.4 pts | 0.5% |
| Worked from home | 12.9% ±7.2 pts | 13.0% |
| Mean travel time to work | 21.4 min ±5.6 | 28.8 min |
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
How does Census Tract 31 compare with the other tracts in Butte County?
Among Butte County's tracts with a reliable estimate, Census Tract 31 ranks as shown below (1 = highest).
| Measure | In Butte County |
|---|---|
| Population | 17th of 54 |
| Residents per square mile | 28th of 54 |
| Median household income | 11th of 52 |
| Per capita income | 14th of 54 |
| Median home value | 29th of 52 |
| Median gross rent | 52nd of 52 |
| Poverty rate | 34th of 46 |
| Bachelor's degree or higher | 35th of 50 |
| Median age | 30th of 54 |
| Owner-occupied share | 14th of 54 |
The tracts next to it on Butte County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 6.01 | 8th | $103,409±$28,733 · within the margin of this tract |
| Tract 5.01 | 9th | $101,667±$22,021 · within the margin of this tract |
| Tract 1.04 | 10th | $101,511±$27,911 · within the margin of this tract |
| Tract 31 | 11th | $96,125±$23,971 |
| Tract 9.04 | 12th | $94,423±$22,434 · within the margin of this tract |
| Tract 22 | 13th | $94,167±$37,009 · within the margin of this tract |
| Tract 15 | 14th | $94,038±$31,731 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 31?
1 of the 18 figures for Census Tract 31 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections