91766 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Los Angeles County
Centroid: Latitude 34.041, Longitude -117.761
Time Zone: Pacific Time Zone (UTC -8 hours)
Observes DST: Yes

ZIP Code 91766 has segments in 2 Counties (Los Angeles, San Bernardino).

Businesses Addresses: 1,551
PO Box Addresses: 0
Residential Addresses: 19,255

Multi-Family Addresses: 1,887
Single Family Addresses: 17,368

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

Pomona, CA 91766 Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	68,280 (100%)
Population in Households	67,375 (98.7%)
Population in Families	58,489 (85.7%)
Population in Group Quarters¹	905 ( 1.3%)
Population Density	6,676
Diversity Index²	83


INCOME
Median Household Income	$79,306
Average Household Income	$100,433
% of Income for Mortgage⁴	50%
Per Capita Income	$28,202
Wealth Index⁵	76
Socioeconomic Status Index⁶	Low (37.1)

HOUSING
Total HU (Housing Units)	19,701 (100%)
Owner Occupied HU	10,134 (51.4%)
Renter Occupied HU	8,975 (45.6%)
Vacant Housing Units	592 ( 3.0%)
Median Home Value	$636,012
Average Home Value	$670,416
Housing Affordability Index³	49

HOUSEHOLDS
Total Households	19,109
Average Household Size	3.53
Family Households	15,336
Average Family Size	4.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Pomona, CA 91766 - Peer Comparisons by Rank and Percentile

The table below compares 91766 to the other 1,774 ZIP Codes in California by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	-0.66%	-0.42%
Households	0.15%	0.06%
Families		-0.05%
Median Household Income		2.33%
Per Capita Income		2.90%
Owner Occupied HU		0.40%

Variable Description	Rank	Percentile
Total Population	# 72	96th
Population Density	# 336	81st
Median Household Income	# 1109	38th
Housing Affordability Index	# 844	48th
Per Capita Income	# 1443	19th
Diversity Index	# 448	75th

91766 ZIP Code Profile, Map, Data & Demographics

ZIP Code 91766: Basic Data & USPS Preferred City Name

Pomona, CA 91766 Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Pomona, CA 91766 - Peer Comparisons by Rank and Percentile

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