Census tract · San Bernardino County
Census Tract 18.03, San Bernardino County, California
Census Tract 18.03, GEOID 06071001803, in San Bernardino County, California, entirely within Ontario. 3,343 residents in the ACS 2020-2024 5-year estimates (±588); the 2020 Census counted 3,240.
Residents, 2020-2024
3,343
±588 (90% margin)
2020 Census count: 3,240
Median household income
$74,447
±$18,798 (90% margin)
San Bernardino County: $85,478
Median home value
$183,000
±$54,114 (90% margin)
San Bernardino County: $505,000
Median gross rent
$2,378
±$192 (90% margin)
San Bernardino County: $1,801
Where is Census Tract 18.03?
Census Tract 18.03 is one of 466 census tracts in San Bernardino County, California. It covers 3.55 square miles of land, 913 residents per square mile in 2020. Its GEOID, 06071001803, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Ontario | 100% |
7 census tracts border Census Tract 18.03: Tract 16 ($65,188), Tract 18.06 ($124,554), Tract 18.08 ($84,349), Tract 18.09 ($78,365), Tract 18.10 ($69,148), Tract 18.13 ($91,213) and Tract 127 ($85,284). 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 18.03?
The 2020-2024 American Community Survey puts Census Tract 18.03's population at 3,343 (±588) in 1,151 households; the 2020 Census counted 3,240 residents and 1,315 housing units.
| Measure | Tract 18.03 | Ontario |
|---|---|---|
| Total population | 3,343±588 | 180,547 |
| Households | 1,151±145 | 53,770 |
| Average household size | 2.87±0.43 | 3.34 |
| Housing units | 1,228±133 | 55,966 |
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 18.03?
The median resident of Census Tract 18.03 is 37.6 years old; 21.2% are under 18 and 19.1% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 74.3%, then non-Hispanic white residents at 14.6%. 30.7% of residents were born outside the United States.
| Measure | Tract 18.03 | Ontario |
|---|---|---|
| Median age | 37.6±3.3 | 33.5 |
| Under 18 years | 21.2%±6.2 pts | 24.4% |
| 65 years and over | 19.1%±5.6 pts | 10.5% |
| Hispanic or Latino (any race) | 74.3%±7.7 pts | 68.6% |
| White alone, not Hispanic | 14.6%±5.9 pts | 12.3% |
| Black or African American alone, not Hispanic | 5.0%±3.5 pts | 5.8% |
| Asian alone, not Hispanic | 4.9%±3.5 pts | 9.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.4%±0.7 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.3 pts | 0.2% |
| Two or more races, not Hispanic | 0.4%±1.5 pts | 2.9% |
| Some other race alone, not Hispanic | 0.3%±0.5 pts | 0.4% |
| Born outside the United States | 30.7%±8.2 pts | 27.7% |
| Speak a language other than English at home (age 5+) | 48.5%±11.9 pts | 55.1% |
| Civilian veterans (age 18+) | 4.6%±3.4 pts | 3.4% |
| With a disability | 6.9%±3.0 pts | 10.0% |
| No health insurance coverage | 3.9%±4.3 pts | 9.2% |
| High school graduate or higher (age 25+) | 68.6%±7.8 pts | 78.1% |
| Bachelor's degree or higher (age 25+) | 19.9%±10.2 pts | 22.5% |
| Graduate or professional degree (age 25+) | 5.4%±4.9 pts | 6.0% |
| Lived in the same house a year earlier | 95.2%±3.3 pts | 92.5% |
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 18.03 earn?
Half of the 1,151 households in Census Tract 18.03 earn less than $74,447 a year (±$18,798), against $85,478 across San Bernardino County: 293rd highest of the county's 453 tracts with a reliable estimate. 7.1% of residents live below the poverty line.
| Measure | Tract 18.03 | Ontario |
|---|---|---|
| Median household income | $74,447±$18,798 | $88,941 |
| Mean household income | $99,839±$22,695 | $106,768 |
| Per capita income | $35,501±$9,413 | $32,506 |
| People below the poverty line | 7.1%±3.3 pts | 12.4% |
| Children under 18 below the poverty line | 0.0%±5.8 pts | 16.8% |
| Households receiving SNAP | 7.6%±5.6 pts | 12.6% |
| Households with a computer | 94.7%±4.5 pts | 97.6% |
| Households with a broadband subscription | 91.1%±5.7 pts | 94.9% |
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 18.03?
Owners occupy 52.2% of Census Tract 18.03's occupied homes and renters 47.8%. The median owner-occupied home is valued at $183,000 by its owner (±$54,114). The median renter pays $2,378 a month including utilities, and 29.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 18.03 | Ontario |
|---|---|---|
| Median home value (owner-occupied) | $183,000±$54,114 | $607,600 |
| Median gross rent | $2,378±$192 | $2,030 |
| Renters paying 35% or more of income on rent | 29.9%±17.1 pts | 52.3% |
| Median monthly owner costs, with a mortgage | $2,083±$282 | $2,549 |
| Owner-occupied homes | 52.2%±12.2 pts | 58.0% |
| Renter-occupied homes | 47.8%±12.2 pts | 42.0% |
| Housing units | 1,228±133 | 55,966 |
| Single-family detached homes | 23.4%±5.9 pts | 57.9% |
| Mobile homes | 37.7%±12.4 pts | 4.0% |
| Built 2020 or later | 2.6%±4.2 pts | 4.5% |
| Built 2010 to 2019 | 18.0%±9.6 pts | 9.8% |
| Built 1939 or earlier | 0.9%±1.4 pts | 5.2% |
| Households with no vehicle | 2.8%±2.1 pts | 4.0% |
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 18.03 get to work?
80.3% of Census Tract 18.03's workers drive alone. The average trip to work takes 28.4 minutes.
| Measure | Tract 18.03 | Ontario |
|---|---|---|
| In the labor force (age 16+) | 63.5%±6.2 pts | 66.2% |
| Unemployment rate | 4.1%±3.7 pts | 6.3% |
| Drove alone to work | 80.3%±9.0 pts | 76.7% |
| Carpooled | 2.4%±3.6 pts | 11.3% |
| Public transportation | 0.7%±1.0 pts | 0.9% |
| Walked | 10.4%±5.6 pts | 1.2% |
| Worked from home | 6.2%±4.9 pts | 9.1% |
| Mean travel time to work | 28.4 min±5.4 | 31.5 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 18.03 compare with the other tracts in San Bernardino County?
Among San Bernardino County's tracts with a reliable estimate, Census Tract 18.03 ranks as shown below (1 = highest).
| Measure | In San Bernardino County | In Ontario |
|---|---|---|
| Population | 372nd of 464 | 34th of 35 |
| Residents per square mile | 376th of 466 | 32nd of 35 |
| Median household income | 293rd of 453 | 25th of 35 |
| Per capita income | 181st of 461 | 11th of 35 |
| Median home value | 434th of 446 | 35th of 35 |
| Median gross rent | 78th of 436 | 6th of 35 |
| Poverty rate | 267th of 301 | 22nd of 25 |
| Bachelor's degree or higher | 225th of 438 | 17th of 35 |
| Median age | 144th of 465 | 6th of 35 |
| Owner-occupied share | 324th of 457 | 21st of 35 |
The tracts next to it on San Bernardino County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 28.03 | 290th | $74,905±$7,837 · within the margin of this tract |
| Tract 15.01 | 291st | $74,583±$13,235 · within the margin of this tract |
| Tract 121.05 | 292nd | $74,453±$39,365 · within the margin of this tract |
| Tract 18.03 | 293rd | $74,447±$18,798 |
| Tract 120.01 | 294th | $74,375±$9,869 · within the margin of this tract |
| Tract 44.03 | 295th | $74,323±$18,242 · within the margin of this tract |
| Tract 64.02 | 296th | $74,083±$7,965 · 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 18.03?
3 of the 18 figures for Census Tract 18.03 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.
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