Residential delivery area · California
ZIP Code 91945: Lemon Grove, CA
ZIP code 91945 is in Lemon Grove, California, entirely in San Diego County (Census 2020 ZIP-county file). About 28,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,016 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Lemon Grove · its only residential ZIP
- County
- San Diego County
- Census places
- Lemon Grove
- Metro area
- San Diego-Chula Vista-Carlsbad, CA
- House district
- CA-51 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 4.0 sq mi · 7,019 people per sq mi
- PO Box ZIPs
- 91946 also use the name Lemon Grove
Where is ZIP code 91945?
91945 centers on 32.733°, -117.034° and covers 4.0 square miles of land. It borders 5 ZIP codes: 92114, 91977, 91941, 92115, 92105.
The map draws ZIP code areas only. For the streets inside 91945, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 91945 compare with the rest of San Diego County?
| Measure | 91945 | In San Diego County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 27,745 | 61st of 116 | 653rd of 1,802 |
| Median household income | $88k | 70th of 85 | 721st of 1,189 |
| Median home value | $705k | 67th of 89 | 676th of 1,317 |
Its median household income is higher than in 71% of U.S. residential ZIP codes, and it is denser than 96% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 91945?
The 2020 Census counted 27,814 people in 91945; the ACS, which samples households over 2020-2024, estimates 27,745. Between the 2010 and 2020 censuses its population grew 9.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 27,745
- 2020 Census count
- 27,814+9.2% since 2010 (25,460)
- Households
- 9,076
- Median age
- 37.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 91945?
Of the 27,745 people the ACS estimates in 91945, 21.0% are under 18 and 14.6% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (45.4%), then White (not Hispanic) (27.0%).
- Under 1821.0%
- 18 to 6464.4%
- 65 and older14.6%
- Hispanic or Latino45.4%
- White, not Hispanic27.0%
- Black, not Hispanic11.9%
- Asian, not Hispanic10.0%
- Other or two or more5.7%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 91945 earn?
Median household income is $88,016 (ACS 2020-2024), the 70th highest of the 85 ranked ZIP codes in San Diego County. It rose from $78,560 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $88,016
- Income per person
- $36,715
- Below the poverty line
- 9.2%
- Unemployed (of the labor force)
- 5.6%
- Adults 25+ with a bachelor's degree
- 20.3%
- Adjusted gross income per tax return, 2022
- $60,36313,450 returns; wages 81% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 91945?
FHFA's house price index for 91945, built from repeat sales and appraisals of the same homes, rose 115% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +0.6% in 2025.
- Median home value (owners' estimate)
- $704,900
- Median gross rent
- $1,896
- Homes owned by their occupants
- 52.5%
- Housing units
- 9,416
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 91945?
532 business establishments had a location in this ZIP code in 2023, 89 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction89
- Retail trade81
- Other services (except public administration)68
- Health care and social assistance62
- Accommodation and food services62
- Administrative and support and waste management and remediation services40
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 91945?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 92114 | San Diego | 65,745 | $98k | 2.1 mi |
| 91977 | Spring Valley | 61,064 | $100k | 2.4 mi |
| 91941 | La Mesa | 33,218 | $115k | 2.8 mi |
| 92115 | San Diego | 66,264 | $79k | 2.9 mi |
| 92105 | San Diego | 71,411 | $69k | 3.3 mi |
| 91942 | La Mesa | 41,424 | $93k | 3.1 mi (near) |
| 92182 | San Diego | 0 | – | 3.7 mi (near) |
| 92139 | San Diego | 34,703 | $96k | 3.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Lemon Grove?
1 more ZIP code carries the postal name Lemon Grove, CA without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 91946 | San Diego County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.