Residential delivery area · Arizona
ZIP Code 85128: Coolidge, AZ
ZIP code 85128 uses the postal name Coolidge, Arizona and lies entirely in Pinal County (Census 2020 ZIP-county file). About 19,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $65,477 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Coolidge (35%) and Blackwater (7%), and 3% in smaller places; 56% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Coolidge · its only residential ZIP
- County
- Pinal County
- Census places
- Coolidge (35%); Blackwater (7%) census-designated place
- Metro area
- Phoenix-Mesa-Chandler, AZ
- House districts
- AZ-2 (98%), AZ-6 (2%) 119th Congress, by share of land
- State
- Arizona
- Time zone
- Mountain (no daylight saving)
- Land area
- 166.7 sq mi · 117 people per sq mi
Where is ZIP code 85128?
85128 centers on 32.963°, -111.510° and covers 166.7 square miles of land plus 1.7 of water. It borders 7 ZIP codes: 85191, 85194, 85143, 85147, 85132, 85142, 85131.
The map draws ZIP code areas only. For the streets inside 85128, 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 85128 compare with the rest of Pinal County?
| Measure | 85128 | In Pinal County | In AZ |
|---|---|---|---|
| People (ACS 2020-2024) | 19,487 | 14th of 35 | 156th of 417 |
| Median household income | $66k | 20th of 24 | 174th of 264 |
| Median home value | $249k | 21st of 29 | 212th of 282 |
Its median household income is higher than in 39% of U.S. residential ZIP codes, and it is denser than 56% 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 85128?
The 2020 Census counted 15,764 people in 85128; the ACS, which samples households over 2020-2024, estimates 19,487. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 19,487
- 2020 Census count
- 15,764
- Households
- 6,181
- Median age
- 32.7
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 85128?
Of the 19,487 people the ACS estimates in 85128, 25.7% are under 18 and 13.6% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (48.5%), then White (not Hispanic) (32.2%).
- Under 1825.7%
- 18 to 6460.7%
- 65 and older13.6%
- Hispanic or Latino48.5%
- White, not Hispanic32.2%
- Other or two or more13.3%
- Black, not Hispanic5.6%
- Asian, not Hispanic0.4%
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 85128 earn?
Median household income is $65,477 (ACS 2020-2024), the 20th highest of the 24 ranked ZIP codes in Pinal County.
- Median household income
- $65,477±$8,287
- Income per person
- $28,555
- Below the poverty line
- 21.2%
- Unemployed (of the labor force)
- 13.1%
- Adults 25+ with a bachelor's degree
- 13.4%
- Adjusted gross income per tax return, 2022
- $52,9487,820 returns; wages 80% 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 85128?
FHFA's house price index for 85128, built from repeat sales and appraisals of the same homes, rose 173% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved +1.3% in 2025.
- Median home value (owners' estimate)
- $249,000
- Median gross rent
- $1,304
- Homes owned by their occupants
- 74.0%
- Housing units
- 6,698
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 85128?
195 business establishments had a location in this ZIP code in 2023, 30 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade32
- Other services (except public administration)26
- Health care and social assistance23
- Accommodation and food services21
- Administrative and support and waste management and remediation services12
- Construction11
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 85128?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 85191 | Valley Farms | 32 | – | 4.0 mi |
| 85194 | Casa Grande | 8,077 | $83k | 8.1 mi |
| 85143 | San Tan Valley | 44,444 | $94k | 13.4 mi |
| 85147 | Sacaton | 4,911 | $49k | 15.6 mi |
| 85132 | Florence | 38,671 | $79k | 17.3 mi |
| 85142 | Queen Creek | 93,700 | $129k | 18.3 mi |
| 85131 | Eloy | 18,794 | $57k | 21.7 mi |
| 85122 | Casa Grande | 61,624 | $68k | 14.2 mi (near) |
| 85140 | San Tan Valley | 51,260 | $102k | 19.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.