PlainZIP

Mason City, IA

Single-footprint Census roll-up for Mason City, IA: 1 USPS ZIP, population 29,837. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet MASON-CITY-IA · Mason City, IA 1 ZIPs · 29,837 pop · #14932/25278 · Cerro Gordo County

INC-MID · RANK-MID · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-SMALL · SPREAD-UNK · HOME-LOW

  • INC-MID $66,072
  • RANK-MID #14932/25278
  • ABOVE-PEER over Rock Falls
  • BOOK-ONE 1 ZIP
  • OWN-MID 66% owners
  • POP-SMALL 29,837
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $146,500

Nearest income peer: Rock Falls, IA ( $2,322 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Mason City

Lowest/highest poles plus county-sharing cities nearest Mason City on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Mason City, IA sits among US cities with a below-median household income, on a small-city population base, across a single-ZIP footprint.

41st pct
household income vs 25,278 US cities
29,837
city population (Census)
1
USPS ZIP codes covered
$66,072
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $66,072 and poverty 11.4% concentrate in 50401.

Owner-occupancy sits in a mixed band (66.3%) - check the ZIP page's tenure split before treating Mason City as a pure owner town.

Within Iowa, Lu Verne is the closest lower-income city and Oskaloosa the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Mason City.

Population concentration

Mason City's single ZIP 50401 carries the town

Mason City is published as a single USPS ZIP. Code 50401 is the entire residential footprint (29,837 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Mason City's one ZIP

Citywide ZBP: 899 establishments, 15,100 employees , annual payroll $749,922k (~30 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 50401 (899 units) ; leading NAICS Retail trade (149) · also Health care and social assistance · Other services (except public administration) .

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ZIP Codes in Mason City, IA

These ZIP codes sit in Cerro Gordo County, which covers 10 ZIP codes in all; 1 of them fall in Mason City. See the Cerro Gordo County roll-up →

Mason City sits in the lower half of Cerro Gordo County on income: Clear Lake, Rockwell and Ventura report more, Meservey, Swaledale and Rock Falls report less. Ventura marks the far end of that range at $98,289, 49% above Mason City.

ZIP Code Population Median income Establishments Density
50401 29,837 $66,072 899 77
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Mason City roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Mason City, .