Twin Lakes is a community in Calhoun County, Iowa, home to about 579 people across 1.3 square miles. It has no ZIP code of its own: it’s part of 50563 and 50579.
Homes sold for a median of $227 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Manson; part is in Twin Lakes
Mostly Rockwell City; part is in Twin Lakes
Each card is that ZIP code’s whole market, including any part outside Twin Lakes. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Twin Lakes’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Des Moines International Airport (DSM)80 miles away |
|---|---|
| Closer regional airport | Fort Dodge Regional Airport (FOD)20 miles away |
| Nearest city of 250,000+ | Omaha, NE114 miles away |
| Nearest city of 1 million+ | Chicago, IL355 miles away |
Straight-line distances from the center of Twin Lakes; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Twin Lakes had 316 residents in the 2020 census, down 5% since 2010.
It’s the 436th largest of 1,019 towns in Iowa by population.
Calhoun County grew from 18,569 residents in 1900 to 9,927 in 2020.
Calhoun County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 8°F. About 33.8 inches of rain and melted snow fall in a typical year, with about 32 inches of snow.
Source: NOAA 1991–2020 climate normals, Rockwell City, IA weather station (7 miles away).
2,241 jobs at 280 businesses in Calhoun County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
18 doctors and other health care providers list an office in Twin Lakes’s ZIP codes.
Nearest hospitals
Providers with an office here
| Dentists | 2 |
|---|---|
| Nurse practitioners and physician assistants | 8 |
| Mental health providers | 1 |
| Physical and occupational therapists | 4 |
| Chiropractors | 3 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Pharmacies
Libraries
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by South Central Calhoun Comm School District, Manson Northwest Webster Comm School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| South Central Calhoun Elementary SchoolRockwell City | Pre-K–3 | 299 | Public | 6.8 mi |
| South Central Calhoun Middle SchoolRockwell City | 4–8 | 329 | Public | 7.5 mi |
| Manson Northwest Webster Junior High/High SchoolManson | 7–12 | 337 | Public | 4.0 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Rockwell City, Manson and Knierim.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.