Residential delivery area · Arizona
ZIP Code 85378: Surprise, AZ
ZIP code 85378 is in Surprise, Arizona, entirely in Maricopa County (Census 2020 ZIP-county file). About 9,800 people live there (Census Bureau, ACS 2020-2024), the least populous of Surprise's 5 residential ZIP codes. Median household income is $56,444 (Census Bureau, ACS 2020-2024). By Census place, 75% of its land lies in Surprise, and 5% in smaller places; 20% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- Town
- Surprise · 5 residential ZIPs
- County
- Maricopa County
- Census places
- Surprise
- Metro area
- Phoenix-Mesa-Chandler, AZ
- House districts
- AZ-8 (60%), AZ-9 (40%) 119th Congress, by share of land
- State
- Arizona
- Time zone
- Mountain (no daylight saving)
- Land area
- 3.6 sq mi · 2,713 people per sq mi
Where is ZIP code 85378?
85378 centers on 33.645°, -112.320° and covers 3.6 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 85373, 85375, 85351, 85335, 85374.
The map draws ZIP code areas only. For the streets inside 85378, 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 GeoNames postal codes (CC BY 4.0).
How does 85378 compare with the rest of Surprise?
| Measure | 85378 | In Surprise | In Maricopa County | In AZ |
|---|---|---|---|---|
| People (ACS 2020-2024) | 9,765 | 5th of 5 | 118th of 140 | 203rd of 417 |
| Median household income | $56k | 5th of 5 | 122nd of 128 | 218th of 264 |
| Median home value | $275k | 5th of 5 | 123rd of 129 | 199th of 282 |
Its median household income is higher than in 23% of U.S. residential ZIP codes, and it is denser than 88% 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 85378?
The 2020 Census counted 9,368 people in 85378; the ACS, which samples households over 2020-2024, estimates 9,765.
- People, ACS 2020-2024
- 9,765±1,066 (90% margin)
- 2020 Census count
- 9,368
- Households
- 4,033
- Median age
- 41.9
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 85378?
Of the 9,765 people the ACS estimates in 85378, 22.0% are under 18 and 19.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (52.6%), then Hispanic or Latino (38.5%).
- Under 1822.0%
- 18 to 6458.6%
- 65 and older19.4%
- White, not Hispanic52.6%
- Hispanic or Latino38.5%
- Black, not Hispanic4.2%
- Other or two or more4.0%
- Asian, not Hispanic0.7%
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 85378 earn?
Median household income is $56,444 (ACS 2020-2024), the 122nd highest of the 128 ranked ZIP codes in Maricopa County.
- Median household income
- $56,444±$10,794
- Income per person
- $30,458
- Below the poverty line
- 23.6%
- Unemployed (of the labor force)
- 6.4%
- Adults 25+ with a bachelor's degree
- 16.4%
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 85378?
- Median home value (owners' estimate)
- $274,500
- Median gross rent
- $1,514
- Homes owned by their occupants
- 62.0%
- Housing units
- 4,670
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 85378?
168 business establishments had a location in this ZIP code in 2023, 41 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade34
- Health care and social assistance31
- Other services (except public administration)27
- Construction11
- Finance and insurance9
- Professional, scientific, and technical services9
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 85378?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 85373 | Sun City | 20,254 | $72k | 2.0 mi |
| 85375 | Sun City West | 27,680 | $64k | 2.8 mi |
| 85351 | Sun City | 27,592 | $54k | 3.4 mi |
| 85335 | El Mirage | 36,088 | $78k | 4.1 mi |
| 85374 | Surprise | 41,420 | $81k | 4.3 mi |
| 85363 | Youngtown | 7,015 | $68k | 4.2 mi (near) |
| 85382 | Peoria | 43,729 | $92k | 4.2 mi (near) |
| 85379 | Surprise | 51,035 | $111k | 4.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.