Residential delivery area · Arizona
ZIP Code 85637: Sonoita, AZ
ZIP code 85637 uses the postal name Sonoita, Arizona and lies mostly in Santa Cruz County (53% of its land) with the rest in Pima County (Census 2020 ZIP-county file). About 1,100 people live there (Census Bureau, ACS 2020-2024). Median household income is $99,688 (Census Bureau, ACS 2020-2024). By Census place, 9% of its land lies in Sonoita (a census-designated place); 92% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Sonoita · its only residential ZIP
- County
- Santa Cruz County (53%); Pima County (47%)
- Census places
- Sonoita census-designated place
- Micro area
- Nogales, AZ
- House districts
- AZ-7 (53%), AZ-6 (47%) 119th Congress, by share of land
- State
- Arizona
- Time zone
- Mountain (no daylight saving)
- Land area
- 124.6 sq mi · 9 people per sq mi
Where is ZIP code 85637?
85637 centers on 31.719°, -110.691° and covers 124.6 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 85611, 85624, 85614, 85641, 85629.
The map draws ZIP code areas only. For the streets inside 85637, 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 85637 compare with the rest of Santa Cruz County?
| Measure | 85637 | In Santa Cruz County | In AZ |
|---|---|---|---|
| People (ACS 2020-2024) | 1,105 | 8th of 9 | 333rd of 417 |
| Median household income | $100k | not ranked | not ranked |
| Median home value | $467k | 2nd of 7 | 79th of 282 |
85637's median household income is not ranked: its 90% margin of error (±$41,245) is more than a quarter of the figure ($99,688). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 16% of 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 85637?
The 2020 Census counted 1,264 people in 85637; the ACS, which samples households over 2020-2024, estimates 1,105. Between the 2010 and 2020 censuses its population fell 0.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,105±315 (90% margin)
- 2020 Census count
- 1,264−0.3% since 2010 (1,268)
- Households
- 477
- Median age
- 60.3
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 85637?
Of the 1,105 people the ACS estimates in 85637, 16.4% are under 18 and 46.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.1%).
- Under 1816.4%
- 18 to 6437.4%
- 65 and older46.2%
- White, not Hispanic92.1%
- Hispanic or Latino6.6%
- Other or two or more1.2%
- Black, not Hispanic0.1%
- Asian, not Hispanic0.0%
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 85637 earn?
Median household income is $99,688 (ACS 2020-2024). It is not measurably different from 2015-2019 ($77,880 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $99,688±$41,245
- Income per person
- $58,271
- Below the poverty line
- 1.1%
- Unemployed (of the labor force)
- 12.3%
- Adults 25+ with a bachelor's degree
- 41.7%
- Adjusted gross income per tax return, 2022
- $111,297720 returns; wages 42% 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 85637?
FHFA's house price index for 85637, built from repeat sales and appraisals of the same homes, rose 76% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved −5.8% in 2025.
- Median home value (owners' estimate)
- $467,100
- Median gross rent
- –
- Homes owned by their occupants
- 89.1%
- Housing units
- 636
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 85637?
50 business establishments had a location in this ZIP code in 2023, 2 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services11
- Construction10
- Retail trade7
- Other services (except public administration)5
- Health care and social assistance4
- Finance and insurance3
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 85637?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 85611 | Elgin | 1,454 | $92k | 11.7 mi |
| 85624 | Patagonia | 1,546 | $56k | 13.9 mi |
| 85614 | Green Valley | 25,381 | $65k | 15.5 mi |
| 85641 | Vail | 34,752 | $131k | 21.0 mi |
| 85629 | Sahuarita | 31,668 | $109k | 29.6 mi |
| 85613 | Fort Huachuca | 4,983 | $90k | 20.7 mi (near) |
| 85616 | Huachuca City | 4,941 | $52k | 21.7 mi (near) |
| 85646 | Tubac | 1,345 | $73k | 22.2 mi (near) |
| 85640 | Tumacacori | 207 | $55k | 23.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.