Zip Code 91945
Lemon Grove, California — San Diego County
📍 ZIP code 91945 is in Lemon Grove, San Diego County, California.
ZIP code 91945 is located in Lemon Grove, San Diego County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 27,531. The area code for ZIP code 91945 is 805.
Quick Answer
Zip code 91945 is in Lemon Grove, California (San Diego County). It has a population of 27,531, median household income of $79,381, and median home value of $640,500.
Population
27,531
Income
$79,381
Home Value
$640,500
Climate
75°F / 47°F
About Zip Code 91945
Zip code 91945 is located in Lemon Grove, California, within San Diego County. Home to approximately 27,531 residents, this area sits at an elevation of 412 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 805.
The median household income is $79,381 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $640,500, and the cost of living index is 169 (69% above the national average of 100).
Summers average a high of 75°F while winters drop to 47°F. The area receives about 9 in of rain annually. The zip code covers 3.9 square miles of land area.
Key Statistics
27,531
$79,381
$640,500
Pacific (PST/PDT)
805
412 ft
3.9 sq mi
38.8
9,715
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Compare With Nearby Zip Codes
| Metric | 91945 | 92114 | 91977 | 91941 | 92115 | 91942 |
|---|---|---|---|---|---|---|
| City | Lemon Grove, CA | San Diego, CA | Spring Valley, CA | Spring Valley, CA | San Diego, CA | La Mesa, CA |
| Population | 27,531 | 64,820 | 62,957 | 33,706 | 64,011 | 40,920 |
| Median Income | $79,381 | $90,171 | $92,407 | $111,607 | $75,178 | $81,262 |
| Home Value | $640,500 | $604,300 | $623,500 | $884,800 | $722,500 | $689,300 |
| Cost of Living | 169 | 166 | 172 | 238 | 180 | 182 |
| Median Age | 38.8 | 38 | 35.3 | 41.2 | 29 | 37.5 |
Cost of Living
100 = National Average. Lemon Grove's cost of living is 69% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
8.1x
Demographics
Zip code 91945 has a population of 27,531 people with a median age of 38.8. There are 9,715 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Lemon Grove (91945) population trend from 2010 to 2024
↓ -11.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
75°F
47°F
9 in
0 in
Lemon Grove experiences mild summers with average highs around 75°F. Winters are mild with lows averaging 47°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$640,500
Median Household Income
$79,381
With 9,715 housing units across 3.9 square miles, 91945 has a housing density of 2,491 units per square mile. The home price-to-income ratio is 8.1x.
Location & Geography
Latitude
32.7332°
Longitude
-117.0342°
Land Area
3.9 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 91945 (Lemon Grove, CA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 91945's $79,381. A way to compare Lemon Grove to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 91945 (Lemon Grove, CA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Lemon Grove, California?
Lemon Grove, California uses zip code 91945.
What county is zip code 91945 in?
Zip code 91945 is located in San Diego County, California.
What is the population of zip code 91945?
The population of zip code 91945 is 27,531 with a median age of 38.8.
Is 91945 in Lemon Grove, California?
Yes, zip code 91945 is in Lemon Grove, San Diego County, California. The area code is 805.
Frequently Asked Questions
What city is zip code 91945 in?
Zip code 91945 is in Lemon Grove, California. It is part of San Diego County and uses the Pacific (PST/PDT) timezone.
What is zip code 91945?
Zip code 91945 is a U.S. postal code in Lemon Grove, California (San Diego County). It has a population of 27,531 and covers 3.9 square miles.
What is the population of zip code 91945?
The population of zip code 91945 (Lemon Grove, CA) is 27,531 with a median age of 38.8. There are approximately 9,715 housing units in this area.
What is the median income in zip code 91945?
The median household income in zip code 91945 (Lemon Grove, CA) is $79,381 per year. The cost of living index is 169 (100 = national average).
What is the average home price in zip code 91945?
The median home value in zip code 91945 (Lemon Grove, CA) is $640,500. The cost of living index is 169 compared to the national average of 100.
What county is zip code 91945 in?
Zip code 91945 is located in San Diego County, California. The primary city is Lemon Grove.
What is the area code for zip code 91945?
Zip code 91945 in Lemon Grove, CA uses area code 805. It is located in the Pacific (PST/PDT) timezone.
Is zip code 91945 a good place to live?
Zip code 91945 (Lemon Grove, CA) has a cost of living index of 169 (100 = national average), a median household income of $79,381, and median home values of $640,500. The median age is 38.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 91945?
The cost of living index for zip code 91945 (Lemon Grove, CA) is 169, where 100 represents the national average. This area is above the national average. Median home value: $640,500.
What schools serve zip code 91945?
Zip code 91945 in Lemon Grove, California is served by the local school district of San Diego County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.