Residential delivery area · Iowa
ZIP Code 50670: Shell Rock, IA
ZIP code 50670 uses the postal name Shell Rock, Iowa and lies mostly in Butler County (97% of its land) with the rest in Bremer County (Census 2020 ZIP-county file). About 2,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $84,679 (Census Bureau, ACS 2020-2024). By Census place, 3% of its land lies in Shell Rock; 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Shell Rock · its only residential ZIP
- County
- Butler County (97%); Bremer County (2%)
- Census places
- Shell Rock
- House district
- IA-2 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 55.1 sq mi · 41 people per sq mi
Where is ZIP code 50670?
50670 centers on 42.678°, -92.616° and covers 55.1 square miles of land plus 0.5 of water. It borders 7 ZIP codes: 50647, 50660, 50619, 50665, 50602, 50677, 50613.
The map draws ZIP code areas only. For the streets inside 50670, 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 50670 compare with the rest of Butler County?
| Measure | 50670 | In Butler County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 2,270 | 6th of 18 | 252nd of 970 |
| Median household income | $85k | 3rd of 11 | 138th of 396 |
| Median home value | $172k | 5th of 11 | 250th of 423 |
Its median household income is higher than in 68% of U.S. residential ZIP codes, and it is denser than 39% 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 50670?
The 2020 Census counted 1,959 people in 50670; the ACS, which samples households over 2020-2024, estimates 2,270. Between the 2010 and 2020 censuses its population fell 3.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,270±332 (90% margin)
- 2020 Census count
- 1,959−3.2% since 2010 (2,024)
- Households
- 803
- Median age
- 41.0
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 50670?
Of the 2,270 people the ACS estimates in 50670, 26.0% are under 18 and 20.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.7%).
- Under 1826.0%
- 18 to 6453.7%
- 65 and older20.3%
- White, not Hispanic94.7%
- Hispanic or Latino3.8%
- Other or two or more1.0%
- Black, not Hispanic0.4%
- 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 50670 earn?
Median household income is $84,679 (ACS 2020-2024), the 3rd highest of the 11 ranked ZIP codes in Butler County. It is not measurably different from 2015-2019 ($80,521 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $84,679
- Income per person
- $39,355
- Below the poverty line
- 4.9%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 24.4%
- Adjusted gross income per tax return, 2022
- $72,081940 returns; wages 67% 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 50670?
FHFA's house price index for 50670, built from repeat sales and appraisals of the same homes, rose 92% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +22.1% in 2025.
- Median home value (owners' estimate)
- $171,500
- Median gross rent
- $931
- Homes owned by their occupants
- 87.2%
- Housing units
- 873
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 50670?
35 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in manufacturing (ZIP Code Business Patterns).
- Manufacturing7
- Construction5
- Transportation and warehousing4
- Retail trade3
- Health care and social assistance3
- Accommodation and food services3
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 50670?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50647 | Janesville | 1,978 | $104k | 6.3 mi |
| 50660 | New Hartford | 1,143 | $96k | 7.0 mi |
| 50619 | Clarksville | 2,150 | $84k | 8.7 mi |
| 50665 | Parkersburg | 2,693 | $76k | 10.4 mi |
| 50602 | Allison | 1,254 | $67k | 10.6 mi |
| 50677 | Waverly | 12,673 | $86k | 10.9 mi |
| 50613 | Cedar Falls | 43,867 | $79k | 12.1 mi |
| 50673 | Stout | 250 | $67k | 11.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.