ZIP Code 91739, California
ZIP Code 91739 profile, demographic data, and geographic information.
ZCTA5 91739 is a 5-digit ZIP Code area located in San Bernardino County, California. As of official census estimates, it has a reported population of 41,673. The land area covers 28.42 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 41,673 | ±1,830 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 37.6 yrs | ±1.6 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 11,990 | ±454 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 12,512 | ±504 |
| Occupied Housing Units | 11,990 | ±454 |
| Vacant Housing Units | 522 | ±229 |
| Median Home Value | $895,000 | ±$36,196 |
| Median Gross Rent | $2,535 | ±$179 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $143,265 | ±$8,448 |
| Per Capita Income | $51,916 | ±$2,701 |
| Poverty Rate | 7% | ±1.6% |
| Population Below Poverty Level | 2,715 | ±649 |
| Unemployment Rate | 6% | ±1.3% |
| Civilian Labor Force, Employed | 20,598 | ±1,332 |
| Broadband Internet Rate | 98.1% | ±1.5% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 2,214,281 (2024)
ID: 161110
|
County | Official County Government |
Contact: CHAIRMAN
385 N ARROWHEAD AVE, FL 5, SAN BERNARDINO CA 92415-0110
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | Rialto, CA | |
| Regular School Nearby | KG-12 | San Bernardino, CA | |
| Alternative School Nearby | 09-12 | Riverside, CA | |
| Regular School Nearby | KG-06 | Colton, CA | |
| Regular School Nearby | KG-06 | Riverside, CA | |
| Alternative School Nearby | 07-12 | La Verne, CA | |
| Regular School Nearby | KG-06 | Pomona, CA | |
| Regular School Nearby | KG-06 | Riverside, CA | |
| Regular School Nearby | 06-08 | Fontana, CA | |
| Regular School Nearby | KG-06 | Colton, CA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Chaffey College
|
College | 3.3 mi away | 5885 Haven Ave, Rancho Cucamonga, CA, 91737-3002 |
9096526000
|
|
SUMMIT BRANCH LIBRARY
|
Library | 3.0 mi away | 15551 SUMMIT AVENUE, FONTANA, CA, 92336 |
(909) 357-5950
|
|
The Fab School
|
College Vocational | 5.7 mi away | 9571 Pittsburgh Avenue, Rancho Cucamonga, CA, 91730 |
9094933791
|
|
PAUL A. BIANE LIBRARY
|
Library | 3.1 mi away | 12505 CULTURAL CENTER DRIVE, RANCHO CUCAMONGA, CA, 91739 |
(909) 477-2720
|
|
Salon Success Academy-Fontana
|
College Vocational | 6.0 mi away | 16803 Arrow Hwy, Fontana, CA, 92335 |
9099824200
|
|
WEST END BRANCH
|
Library | 5.0 mi away | 8409 UTICA AVE., RANCHO CUCAMONGA, CA, 91730 |
(909) 944-5106
|
|
Universal Technical Institute of California Inc
|
College | 6.1 mi away | 9494 Haven Avenue, Rancho Cucamonga, CA, 91730-0000 |
800508165800000
|
|
ARCHIBALD LIBRARY
|
Library | 5.0 mi away | 7368 ARCHIBALD AVENUE, RANCHO CUCAMONGA, CA, 91730 |
(909) 477-2720
|
|
UEI College-Ontario
|
College Vocational | 6.3 mi away | 4730 Ontario Mills Parkway, Ontario, CA, 91764-5574 |
9094762424
|
|
FONTANA LEWIS LIBRARY AND TECHNOLOGY CENTER
|
Library | 6.0 mi away | 8437 SIERRA AVENUE, FONTANA, CA, 92335 |
(909) 574-4500
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ONTARIO INTL AP, CA US, located 8.4 miles from ZCTA5 91739. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 67.7° | 44.6° | 56.1° | 2.57" | — |
| February | 68.1° | 46.2° | 57.1° | 3.07" | — |
| March | 71.7° | 48.7° | 60.2° | 1.64" | — |
| April | 75.7° | 51.1° | 63.4° | 0.76" | — |
| May | 79.8° | 55.6° | 67.7° | 0.30" | — |
| June | 86.4° | 60.0° | 73.2° | 0.02" | — |
| July | 93.8° | 64.7° | 79.2° | 0.05" | — |
| August | 94.9° | 65.2° | 80.1° | 0.03" | — |
| September | 91.3° | 63.8° | 77.6° | 0.10" | — |
| October | 82.6° | 57.1° | 69.8° | 0.41" | — |
| November | 74.7° | 49.0° | 61.9° | 0.80" | — |
| December | 66.9° | 43.6° | 55.2° | 1.89" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Rancho Cucamonga city | City | 3.3 mi | — |
| Fontana city | City | 4.5 mi | — |
| Lytle Creek CDP | CDP | 6.5 mi | — |
| Rialto city | City | 7.8 mi | — |
| San Antonio Heights CDP | CDP | 8.1 mi | — |
| Upland city | City | 8.6 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 91739. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.