91730 ZIP Code — Rancho Cucamonga, CA
San Bernardino County, California
ZIP code 91730 is located in Rancho Cucamonga, California, within San Bernardino County. It covers approximately 13.73 square miles and serves a population of 71,040 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 909/951.
About ZIP code 91730
The housing stock consists of a significant share of large multi-unit buildings. Most homes were built in the 1980s, giving the area an established character. Median home value is $558,600. Owner-occupancy sits near the national average at 48%.
Median household income is $84,850.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 32 minutes is near the national average.
Educational attainment is near the national average, with 32% of residents holding a bachelor's degree or higher.
71,040
population
13.73
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
91730 ZIP code map
Cities in ZIP code 91730
Below are the cities the US Postal Service accepts for ZIP code 91730. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Rancho Cucamonga | Acceptable |
| Rancho Cucamonga | Preferred |
Nearby ZIP codes
91764 Ontario (1.6 mi)
91701 Rancho Cucamonga (3.4 mi)
91739 Rancho Cucamonga (3.6 mi)
91737 Rancho Cucamonga (3.7 mi)
91758 Ontario (4.9 mi)
91786 Upland (5 mi)
91761 Ontario (5.1 mi)
91762 Ontario (5.7 mi)
91762 Ontario (5.7 mi)
91784 Upland (5.8 mi)
92335 Fontana (6.6 mi)
92337 Fontana (7.1 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 71,040 |
| Population density | 5,174 / sq mi |
| State FIPS | 06 |
| County FIPS | 071 |
| Geography | |
|---|---|
| Land area | 13.73 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 34.0994 |
| Longitude | -117.5763 |
| Timezone | Pacific (PT) |
| Area code | 909/951 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 31.6% | 37.7% | 32.6% |
| $50k – $100k | 33.6% | 32.0% | 27.7% |
| $100k – $200k | 25.7% | 23.9% | 26.4% |
| Over $200k | 9.1% | 6.3% | 13.3% |
Demographics & statistics
71,040
Population
5,174
People per sq mi
34.3
Median age
$84,850
Median household income
$36,639
Per capita income
$558,600
Median home value
$2,137
Median monthly rent
48.4%
Home ownership
10.2%
Poverty rate
5.0%
Unemployment
13,040
Housing units
32.0%
Bachelor's or higher
Age distribution
Male
Female
2,666
Under 5
3,040
1,889
5–9
2,154
2,049
10–14
2,336
2,040
15–19
2,326
1,888
20–24
2,153
6,533
25–34
7,449
4,135
35–44
4,715
4,272
45–54
4,871
2,066
55–59
2,356
1,785
60–64
2,035
2,420
65–74
2,760
1,026
75–84
1,169
424
85+
483
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 16,581 | 23.3% |
| 18 and over | 54,459 | 76.7% |
| 65 and over | 8,282 | 11.7% |
| Median age | 34.3 years | |
Race & ethnicity
White
32.6%
Hispanic or Latino
22%
Other race
13.5%
Two or more races
11.8%
Asian
10.6%
Black or African American
7.9%
American Indian / Alaska Native
1.4%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 29,700 | 32.6% |
| Hispanic or Latino | 20,017 | 22% |
| Other race | 12,275 | 13.5% |
| Two or more races | 10,788 | 11.8% |
| Asian | 9,675 | 10.6% |
| Black or African American | 7,194 | 7.9% |
| American Indian / Alaska Native | 1,318 | 1.4% |
| Native Hawaiian / Pacific Islander | 90 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 31.6% | 37.7% | 32.6% |
| $50k – $100k | 33.6% | 32.0% | 27.7% |
| $100k – $200k | 25.7% | 23.9% | 26.4% |
| Over $200k | 9.1% | 6.3% | 13.3% |
Under $10k
4.6%
$10k–$15k
2.4%
$15k–$25k
5.0%
$25k–$35k
5.9%
$35k–$50k
8.8%
$50k–$75k
16.9%
$75k–$100k
14.6%
$100k–$150k
21.9%
$150k–$200k
8.8%
$200k+
11.1%
| Range | % of households |
|---|---|
| Under $10k | 4.6% |
| $10k–$15k | 2.4% |
| $15k–$25k | 5.0% |
| $25k–$35k | 5.9% |
| $35k–$50k | 8.8% |
| $50k–$75k | 16.9% |
| $75k–$100k | 14.6% |
| $100k–$150k | 21.9% |
| $150k–$200k | 8.8% |
| $200k+ | 11.1% |
| Median income | $84,850 |
Housing
Home values
Under $50k
2.0%
$50k–$100k
2.6%
$100k–$150k
2.0%
$150k–$200k
0.4%
$200k–$300k
2.9%
$300k–$500k
28.6%
$500k–$1M
58.5%
$1M+
2.9%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $558,600 |
| Median rent / month | $2,137 |
| Owner occupied | 48.4% |
| Renter occupied | 51.6% |
| Vacant | 3.6% |
| Single-family detached | 44.0% |
| Large apartment buildings | 21.6% |
| Mobile homes | 3.0% |
| Median rooms | 4.9 |
| Avg household size (owned) | 2.98 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.8% |
| 2010–2019 | 4.7% |
| 2000–2009 | 20.7% |
| 1990–1999 | 15.9% |
| 1980–1989 | 23.9% |
| 1970–1979 | 20.7% |
| 1960–1969 | 5.8% |
| 1950–1959 | 5.4% |
| 1940–1949 | 0.5% |
| 1939 or earlier | 1.5% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 3.8% |
| 1 bedroom | 14.5% |
| 2 bedrooms | 30.2% |
| 3 bedrooms | 34.0% |
| 4 bedrooms | 15.2% |
| 5+ bedrooms | 2.3% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.3% |
| 1 vehicle | 33.9% |
| 2 vehicles | 38.4% |
| 3 or more | 24.3% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 66.4% |
| Electricity | 27.7% |
| Propane / LP gas | 2.4% |
| Wood | 0.3% |
| Solar | 0.6% |
| No fuel used | 2.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 11,393 | 45.6% |
| Cohabiting couple | 1,546 | 6.2% |
| Male householder, no spouse | 4,082 | 16.3% |
| Female householder, no spouse | 7,977 | 31.9% |
| Households with children under 18 | 8,633 | 34.5% |
| Households with seniors (65+) | 6,113 | 24.5% |
| Average household size | 2.83 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 37.5% | 33.9% |
| Married | 50.8% | 42.8% |
| Separated | 1.2% | 2.6% |
| Widowed | 1.9% | 7.2% |
| Divorced | 8.5% | 13.5% |
Education
Less than 9th grade
4.9%
Some HS, no diploma
4.8%
HS graduate
20.4%
Some college, no degree
26.7%
Associate's degree
11.3%
Bachelor's degree
20.9%
Graduate / professional
11.0%
| Metric | % |
|---|---|
| HS diploma or higher | 90.3% |
| Bachelor's or higher | 32.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 1,028 | 5.4% |
| Kindergarten | 1,040 | 5.4% |
| Elementary school | 6,303 | 32.9% |
| High school | 3,537 | 18.4% |
| College / grad school | 7,269 | 37.9% |
Employment
Industry of employment
Education & healthcare
24.6%
Retail trade
11.7%
Transportation & utilities
9.6%
Professional & management
8.7%
Manufacturing
8.4%
Arts, food & hospitality
7.8%
Finance & real estate
7.1%
Other services
5.6%
Public administration
5.5%
Construction
5.2%
Wholesale trade
3.6%
Information
1.2%
Agriculture & mining
1.0%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 40.5% |
| Service | 16.1% |
| Sales & office | 22.6% |
| Natural resources & construction | 7.2% |
| Production & transportation | 13.6% |
Employment type
| Type | % |
|---|---|
| Private sector | 78.5% |
| Government | 16.0% |
| Self-employed | 5.5% |
| Unpaid family workers | 0.1% |
Commute
| Method | % |
|---|---|
| Drive alone | 75.5% |
| Carpool | 11.3% |
| Public transit | 1.4% |
| Walk | 0.6% |
| Work from home | 9.6% |
| Other means | 1.6% |
| Avg commute (minutes) | 32.2 |
Poverty
All people
10.2%
Under 18 years
13.7%
18 and over
9.2%
Married-couple families
4.8%
Female-led households
16.7%
Income support
| Source | % of households |
|---|---|
| Social Security | 24.3% |
| Retirement income | 19.8% |
| Supplemental Security | 4.2% |
| Cash public assistance | 2.7% |
| Food stamps / SNAP | 7.4% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 37.1% |
| High blood pressure | 25.3% |
| High cholesterol | 26.9% |
| Diabetes | 8.7% |
| Heart disease | 4.0% |
| Stroke | 2.1% |
| Asthma | 10.0% |
| Arthritis | 16.8% |
| Kidney disease | 2.2% |
| Pulmonary disease | 4.4% |
| Cancer | 4.1% |
| Behavior / access | % |
|---|---|
| Smoking | 12.7% |
| Binge drinking | 20.2% |
| No physical activity | 20.6% |
| Less than 7 hrs sleep | 36.9% |
| Depression | 17.3% |
| Fair or poor health | 13.8% |
| Poor mental health | 15.3% |
| Poor physical health | 9.2% |
| No health insurance | 14.1% |
| Visited doctor (checkup) | 63.1% |
| Visited dentist | 63.4% |
| Cholesterol screening | 89.1% |
| Teeth loss | 10.8% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,793 | 5.1% |
| Disability | % |
|---|---|
| Any disability | 9.2% |
| Under 18 | 2.2% |
| 18–64 years | 7.3% |
| 65 and over | 34.1% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 67.9% |
| Public insurance | 32.6% |
| No insurance | 6.3% |
| Uninsured under 19 | 4.7% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 65,334 | 92.0% |
| Spanish | 9,018 | 13.8% |
| Other Indo-European | 4,468 | 6.8% |
| Asian & Pacific Islander | 576 | 0.9% |
| Other languages | 3,424 | 5.2% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 55,565 | 78.2% |
| Born in same state | 54,252 | 76.4% |
| Born in different state | 45,943 | 64.7% |
| Foreign born | 1,313 | 1.8% |
| Naturalized citizen | 15,475 | 21.8% |
| Not a US citizen | 9,181 | 59.3% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 3,768 | 5.3% |
| French | 3,614 | 5.1% |
| Arab | 1,981 | 2.8% |
| Polish | 411 | 0.6% |
| Ancestry | Count | % |
|---|---|---|
| English | 291 | 0.4% |
| German | 211 | 0.3% |
| Irish | 142 | 0.2% |
| Dutch | 82 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 35.2% |
| Internet access | 97.9% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 91730
What part of Rancho Cucamonga is ZIP code 91730?
ZIP code 91730 covers a portion of Rancho Cucamonga, California, within San Bernardino County.
What county is ZIP code 91730 in?
ZIP code 91730 falls within San Bernardino County, California.
What is the typical home value in ZIP code 91730?
The median home value in ZIP code 91730 is $558,600.
What is the population of ZIP code 91730?
ZIP code 91730 has an estimated population of 71,040 residents, with a density of 5,174 people per square mile.
What is the median household income in ZIP code 91730?
The median household income in ZIP code 91730 is $84,850, above the national median of ~$75,000.
What timezone is ZIP code 91730 in?
ZIP code 91730 observes the PST timezone.