Residential delivery area · Iowa
ZIP Code 50450: Lake Mills, IA
ZIP code 50450 uses the postal name Lake Mills, Iowa and lies mostly in Winnebago County (68% of its land) with the rest in Worth County (Census 2020 ZIP-county file). About 3,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $76,125 (Census Bureau, ACS 2020-2024). By Census place, 3% of its land lies in Lake Mills; 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Lake Mills · its only residential ZIP
- County
- Winnebago County (68%); Worth County (32%)
- Census places
- Lake Mills
- House districts
- IA-4 (68%), IA-2 (32%) 119th Congress, by share of land
- State
- Iowa
- Time zone
- Central
- Land area
- 84.5 sq mi · 35 people per sq mi
Where is ZIP code 50450?
50450 centers on 43.421°, -93.522° and covers 84.5 square miles of land plus 1.7 of water. It borders 6 ZIP codes: 56029, 50446, 50453, 50473, 50459, 50436.
The map draws ZIP code areas only. For the streets inside 50450, 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 50450 compare with the rest of Winnebago County?
| Measure | 50450 | In Winnebago County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 2,952 | 2nd of 10 | 207th of 970 |
| Median household income | $76k | 1st of 2 | 201st of 396 |
| Median home value | $158k | 2nd of 3 | 300th of 423 |
Its median household income is higher than in 57% of U.S. residential ZIP codes, and it is denser than 35% 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 50450?
The 2020 Census counted 2,827 people in 50450; the ACS, which samples households over 2020-2024, estimates 2,952. Between the 2010 and 2020 censuses its population fell 2.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,952
- 2020 Census count
- 2,827−2.4% since 2010 (2,897)
- Households
- 1,369
- Median age
- 45.7
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 50450?
Of the 2,952 people the ACS estimates in 50450, 19.1% are under 18 and 23.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.1%).
- Under 1819.1%
- 18 to 6457.0%
- 65 and older23.9%
- White, not Hispanic91.1%
- Hispanic or Latino6.7%
- Other or two or more2.1%
- Asian, not Hispanic0.1%
- Black, 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 50450 earn?
Median household income is $76,125 (ACS 2020-2024). It rose from $63,591 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $76,125±$9,101
- Income per person
- $38,820
- Below the poverty line
- 10.8%
- Unemployed (of the labor force)
- 1.7%
- Adults 25+ with a bachelor's degree
- 20.0%
- Adjusted gross income per tax return, 2022
- $74,6331,420 returns; wages 57% 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 50450?
FHFA's house price index for 50450, built from repeat sales and appraisals of the same homes, rose 80% from 2015 to 2025 and rose 45% from 2020 to 2025, and moved +12.3% in 2025.
- Median home value (owners' estimate)
- $158,000
- Median gross rent
- $640
- Homes owned by their occupants
- 69.8%
- Housing units
- 1,570
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 50450?
96 business establishments had a location in this ZIP code in 2023, 10 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade18
- Manufacturing11
- Construction10
- Finance and insurance9
- Other services (except public administration)8
- Administrative and support and waste management and remediation services7
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 50450?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 56029 | Emmons, MN | 642 | $68k | 6.7 mi |
| 50446 | Joice | 476 | $107k | 7.0 mi |
| 50453 | Leland | 537 | $78k | 7.4 mi |
| 50473 | Scarville | 219 | $50k | 7.9 mi |
| 50459 | Northwood | 3,045 | $72k | 13.9 mi |
| 50436 | Forest City | 5,771 | $75k | 13.9 mi |
| 56089 | Twin Lakes, MN | 214 | $56k | 10.6 mi (near) |
| 50444 | Hanlontown | 394 | $78k | 11.0 mi (near) |
| 50434 | Fertile | 396 | – | 11.9 mi (near) |
| 56051 | Kiester, MN | 610 | $54k | 12.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.