PUBLIC REGISTRY INFORMATION
115 registered sex offenders in Mason City, Iowa
View the October 7, 2026 registry snapshot for Mason City and search public registry locations near a specific address.
Registry snapshot
October 7, 2026- Registry records
- 115
- Registry source
- Iowa Sex Offender Registry
Informational snapshot; verify current details with the official registry.
Registry statistics
Population and rate comparison- Registry records per 10,000 residents
- 42.5
- Population estimate
- 27,050
- About 1 registry record per
- 235 residents
44% above Cerro Gordo County’s rate
U.S. Census Bureau, ACS 5-year estimate. Records relative to population, not the share of residents on a registry.
About this snapshot
The October 7, 2026 snapshot lists 115 registry records in Mason City, Iowa. With an estimated population of 27,050, that is 42.5 registry records per 10,000 residents. This is 71% above the Iowa statewide rate (24.8 per 10,000). The map preview covers a different 1-mile area, so its count may differ from the city total.
Explore registry locations near Mason City
Free public map · No account required
A 1-mile radius around the map center. This is not the whole city count.
Open the interactive map →Nearby counties
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| Polk County | 1,132 | 503,175 | 22.5 |
ZIP codes near Mason City
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| ZIP code 50401 | 113 | 28,703 | 39.4 |
| ZIP code 50131 | 10 | 24,583 | 4.1 |
| ZIP code 50402 | 1 | — | — |
Other cities near Cerro Gordo County
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| Clear Lake | 3 | 7,607 | 3.9 |
| Thornton | 3 | 514 | 58.4 |
| Clearlake | 1 | — | — |
Each area shows its own total. City, county, and ZIP totals can overlap. Do not add these totals together. Population figures, where shown: U.S. Census Bureau, ACS 5-year estimate.
Frequently asked questions
How many registered sex offenders are listed in Mason City?
The October 7, 2026 snapshot lists 115 registry records in Mason City, Iowa. Counts may differ from official registry totals. Check the official registry for current details.
How do city, county, and ZIP totals relate?
City, county, and ZIP boundaries can overlap, so the same registry record may appear in more than one area. Do not add these totals together.
Does the map preview show the whole city?
No. The preview shows public registry locations within 1 mile of the map center. This is not the whole area count, so the results may differ from the total above.
Check a specific address
Search the free map and verify any result with the official registry.
Search an address on the map →