Census tract · San Bernardino County
Census Tract 20.31, San Bernardino County, California
Census Tract 20.31, GEOID 06071002031, in San Bernardino County, California, entirely within Rancho Cucamonga. 6,734 residents in the ACS 2020-2024 5-year estimates (±684); the 2020 Census counted 6,318.
Residents, 2020-2024
6,734
±684 (90% margin)
2020 Census count: 6,318
Median household income
$157,370
±$24,445 (90% margin)
San Bernardino County: $85,478
Median home value
$838,400
±$19,765 (90% margin)
San Bernardino County: $505,000
Median gross rent
$3,342
±$134 (90% margin)
San Bernardino County: $1,801
Where is Census Tract 20.31?
Census Tract 20.31 is one of 466 census tracts in San Bernardino County, California. It covers 0.79 square miles of land, 8,028 residents per square mile in 2020. Its GEOID, 06071002031, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Rancho Cucamonga | 100% |
4 census tracts border Census Tract 20.31: Tract 20.21 ($149,609), Tract 20.29 ($126,848), Tract 20.35 ($93,207) and Tract 20.44 ($122,123). 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 20.31?
The 2020-2024 American Community Survey puts Census Tract 20.31's population at 6,734 (±684) in 1,921 households; the 2020 Census counted 6,318 residents and 1,907 housing units.
| Measure | Tract 20.31 | Rancho Cucamonga |
|---|---|---|
| Total population | 6,734 ±684 | 175,411 |
| Households | 1,921 ±207 | 58,835 |
| Average household size | 3.51 ±0.23 | 2.93 |
| Housing units | 1,921 ±207 | 60,879 |
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 20.31?
The median resident of Census Tract 20.31 is 37.1 years old; 23.3% are under 18 and 10.8% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 32.4%, then non-Hispanic white residents at 30.3%. 28.9% of residents were born outside the United States.
| Measure | Tract 20.31 | Rancho Cucamonga |
|---|---|---|
| Median age | 37.1 ±2.8 | 38.6 |
| Under 18 years | 23.3% ±3.0 pts | 22.5% |
| 65 years and over | 10.8% ±2.4 pts | 14.5% |
| Hispanic or Latino (any race) | 32.4% ±5.2 pts | 38.1% |
| White alone, not Hispanic | 30.3% ±6.2 pts | 33.4% |
| Black or African American alone, not Hispanic | 4.3% ±2.6 pts | 8.3% |
| Asian alone, not Hispanic | 29.4% ±5.6 pts | 15.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.6 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.2% |
| Two or more races, not Hispanic | 2.1% ±1.1 pts | 4.0% |
| Some other race alone, not Hispanic | 1.4% ±2.1 pts | 0.9% |
| Born outside the United States | 28.9% ±4.2 pts | 20.8% |
| Speak a language other than English at home (age 5+) | 42.1% ±6.6 pts | 34.2% |
| Civilian veterans (age 18+) | 3.7% ±1.8 pts | 5.1% |
| With a disability | 6.4% ±1.9 pts | 10.2% |
| No health insurance coverage | 3.6% ±2.5 pts | 5.0% |
| High school graduate or higher (age 25+) | 95.7% ±2.1 pts | 91.5% |
| Bachelor's degree or higher (age 25+) | 45.9% ±8.8 pts | 37.5% |
| Graduate or professional degree (age 25+) | 20.6% ±6.8 pts | 14.6% |
| Lived in the same house a year earlier | 91.1% ±3.5 pts | 89.8% |
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 20.31 earn?
Half of the 1,921 households in Census Tract 20.31 earn less than $157,370 a year (±$24,445), against $85,478 across San Bernardino County: 17th highest of the county's 453 tracts with a reliable estimate. 3.1% of residents live below the poverty line.
| Measure | Tract 20.31 | Rancho Cucamonga |
|---|---|---|
| Median household income | $157,370 ±$24,445 | $111,895 |
| Mean household income | $210,317 ±$41,735 | $140,135 |
| Per capita income | $60,481 ±$12,820 | $47,475 |
| People below the poverty line | 3.1% ±2.0 pts | 8.0% |
| Children under 18 below the poverty line | 3.3% ±4.4 pts | 10.6% |
| Households receiving SNAP | 5.8% ±3.3 pts | 7.9% |
| Households with a computer | 100.0% ±2.2 pts | 98.0% |
| Households with a broadband subscription | 100.0% ±2.2 pts | 94.8% |
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 20.31?
Owners occupy 83.9% of Census Tract 20.31's occupied homes and renters 16.1%. The median owner-occupied home is valued at $838,400 by its owner (±$19,765). The median renter pays $3,342 a month including utilities, and 55.6% of renters pay 35% or more of their income on rent.
| Measure | Tract 20.31 | Rancho Cucamonga |
|---|---|---|
| Median home value (owner-occupied) | $838,400 ±$19,765 | $740,200 |
| Median gross rent | $3,342 ±$134 | $2,357 |
| Renters paying 35% or more of income on rent | 55.6% ±27.5 pts | 47.1% |
| Median monthly owner costs, with a mortgage | $3,189 ±$185 | $2,947 |
| Owner-occupied homes | 83.9% ±7.2 pts | 62.3% |
| Renter-occupied homes | 16.1% ±7.2 pts | 37.7% |
| Housing units | 1,921 ±207 | 60,879 |
| Single-family detached homes | 98.0% ±2.5 pts | 62.5% |
| Mobile homes | 1.6% ±2.4 pts | 2.3% |
| Built 2020 or later | 0.0% ±2.2 pts | 1.4% |
| Built 2010 to 2019 | 2.4% ±2.9 pts | 6.6% |
| Built 1939 or earlier | 0.0% ±2.2 pts | 1.2% |
| Households with no vehicle | 0.8% ±0.9 pts | 3.7% |
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 20.31 get to work?
69.2% of Census Tract 20.31's workers drive alone and 17.6% work from home. The average trip to work takes 30.0 minutes. The unemployment rate in 2020-2024 averaged 5.9%.
| Measure | Tract 20.31 | Rancho Cucamonga |
|---|---|---|
| In the labor force (age 16+) | 64.0% ±4.6 pts | 65.2% |
| Unemployment rate | 5.9% ±2.4 pts | 5.9% |
| Drove alone to work | 69.2% ±7.1 pts | 73.8% |
| Carpooled | 12.3% ±4.6 pts | 9.4% |
| Public transportation | 0.2% ±0.3 pts | 1.0% |
| Walked | 0.0% ±1.4 pts | 0.6% |
| Worked from home | 17.6% ±5.5 pts | 13.8% |
| Mean travel time to work | 30.0 min ±2.8 | 32.3 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 20.31 compare with the other tracts in San Bernardino County?
Among San Bernardino County's tracts with a reliable estimate, Census Tract 20.31 ranks as shown below (1 = highest).
| Measure | In San Bernardino County | In Rancho Cucamonga |
|---|---|---|
| Population | 45th of 464 | 3rd of 36 |
| Residents per square mile | 90th of 466 | 9th of 36 |
| Median household income | 17th of 453 | 4th of 36 |
| Per capita income | 23rd of 461 | 6th of 36 |
| Median home value | 26th of 446 | 9th of 36 |
| Median gross rent | 8th of 436 | 3rd of 32 |
| Poverty rate | 297th of 301 | 17th of 17 |
| Bachelor's degree or higher | 36th of 438 | 7th of 36 |
| Median age | 153rd of 465 | 22nd of 36 |
| Owner-occupied share | 76th of 457 | 9th of 36 |
The tracts next to it on San Bernardino County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 27.07 | 14th | $162,917±$56,482 · within the margin of this tract |
| Tract 1.17 | 15th | $160,773±$26,476 · within the margin of this tract |
| Tract 20.39 | 16th | $159,832±$22,709 · within the margin of this tract |
| Tract 20.31 | 17th | $157,370±$24,445 |
| Tract 8.16 | 18th | $156,875±$50,319 · within the margin of this tract |
| Tract 87.15 | 19th | $154,630±$21,337 · within the margin of this tract |
| Tract 20.17 | 20th | $153,168±$12,244 · 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 20.31?
Every figure for Census Tract 20.31 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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