Residential delivery area · Iowa
ZIP Code 50156: Madrid, IA
ZIP code 50156 uses the postal name Madrid, Iowa and lies mostly in Boone County (77% of its land), reaching into Polk County and Dallas County (Census 2020 ZIP-county file). About 4,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $98,054 (Census Bureau, ACS 2020-2024). By Census place, 1% of its land lies in Madrid; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Madrid · its only residential ZIP
- County
- Boone County (77%); Polk County (16%); Dallas County (7%)
- Census places
- Madrid
- Metro area
- Ames, IA
- House districts
- IA-4 (77%), IA-3 (23%) 119th Congress, by share of land
- State
- Iowa
- Time zone
- Central
- Land area
- 88.5 sq mi · 52 people per sq mi
Where is ZIP code 50156?
50156 centers on 41.898°, -93.801° and covers 88.5 square miles of land plus 1.7 of water. It borders 9 ZIP codes: 50152, 50243, 50276, 50134, 50244, 50226, 50109, 50014, 50036.
The map draws ZIP code areas only. For the streets inside 50156, 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 50156 compare with the rest of Boone County?
| Measure | 50156 | In Boone County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 4,575 | 4th of 21 | 153rd of 970 |
| Median household income | $98k | 2nd of 9 | 68th of 396 |
| Median home value | $244k | 3rd of 8 | 105th of 423 |
Its median household income is higher than in 80% of U.S. residential ZIP codes, and it is denser than 43% 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 50156?
The 2020 Census counted 4,662 people in 50156; the ACS, which samples households over 2020-2024, estimates 4,575. Between the 2010 and 2020 censuses its population grew 5.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,575
- 2020 Census count
- 4,662+5.7% since 2010 (4,412)
- Households
- 1,791
- Median age
- 41.1
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 50156?
Of the 4,575 people the ACS estimates in 50156, 20.7% are under 18 and 23.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.9%).
- Under 1820.7%
- 18 to 6455.6%
- 65 and older23.7%
- White, not Hispanic92.9%
- Hispanic or Latino5.4%
- Other or two or more1.7%
- Black, not Hispanic0.0%
- 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 50156 earn?
Median household income is $98,054 (ACS 2020-2024), the 2nd highest of the 9 ranked ZIP codes in Boone County. It is not measurably different from 2015-2019 ($89,000 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $98,054
- Income per person
- $44,970
- Below the poverty line
- 3.8%
- Unemployed (of the labor force)
- 1.1%
- Adults 25+ with a bachelor's degree
- 29.8%
- Adjusted gross income per tax return, 2022
- $83,6782,170 returns; wages 69% 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 50156?
FHFA's house price index for 50156, built from repeat sales and appraisals of the same homes, rose 84% from 2015 to 2025 and rose 44% from 2020 to 2025, and moved +0.0% in 2025.
- Median home value (owners' estimate)
- $243,800
- Median gross rent
- $768
- Homes owned by their occupants
- 88.2%
- Housing units
- 1,914
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 50156?
90 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction14
- Other services (except public administration)13
- Retail trade9
- Accommodation and food services9
- Real estate and rental and leasing6
- Professional, scientific, and technical services6
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 50156?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50152 | Luther | 138 | $94k | 4.9 mi |
| 50243 | Sheldahl | 361 | $81k | 5.9 mi |
| 50276 | Woodward | 2,679 | $92k | 6.8 mi |
| 50134 | Kelley | 770 | $111k | 7.1 mi |
| 50244 | Slater | 1,729 | $120k | 8.4 mi |
| 50226 | Polk City | 7,759 | $153k | 8.7 mi |
| 50109 | Granger | 3,309 | $119k | 8.8 mi |
| 50014 | Ames | 32,958 | $61k | 11.6 mi |
| 50036 | Boone | 16,154 | $79k | 13.2 mi |
| 50124 | Huxley | 4,859 | $115k | 10.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.