Residential delivery area · Illinois
ZIP Code 62664: Mason City, IL
ZIP code 62664 uses the postal name Mason City, Illinois and lies entirely in Mason County (Census 2020 ZIP-county file). About 2,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $70,509 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Mason City; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mason City · its only residential ZIP
- County
- Mason County
- Census places
- Mason City
- House district
- IL-15 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 107.0 sq mi · 27 people per sq mi
Where is ZIP code 62664?
62664 centers on 40.213°, -89.724° and covers 107.0 square miles of land plus 0.3 of water. It borders 7 ZIP codes: 62682, 62633, 62642, 62671, 61532, 62666, 62675.
The map draws ZIP code areas only. For the streets inside 62664, 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 62664 compare with the rest of Mason County?
| Measure | 62664 | In Mason County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 2,922 | 3rd of 11 | 580th of 1,396 |
| Median household income | $71k | 2nd of 4 | 513th of 797 |
| Median home value | $101k | 3rd of 4 | 762nd of 842 |
Its median household income is higher than in 47% of U.S. residential ZIP codes, and it is denser than 31% 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 62664?
The 2020 Census counted 2,712 people in 62664; the ACS, which samples households over 2020-2024, estimates 2,922. Between the 2010 and 2020 censuses its population fell 10.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,922
- 2020 Census count
- 2,712−10.8% since 2010 (3,042)
- Households
- 1,316
- Median age
- 44.6
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 62664?
Of the 2,922 people the ACS estimates in 62664, 21.0% are under 18 and 23.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.7%).
- Under 1821.0%
- 18 to 6456.0%
- 65 and older23.1%
- White, not Hispanic96.7%
- Other or two or more2.1%
- Hispanic or Latino0.6%
- Black, not Hispanic0.6%
- 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 62664 earn?
Median household income is $70,509 (ACS 2020-2024), the 2nd highest of the 4 ranked ZIP codes in Mason County. It is not measurably different from 2015-2019 ($60,611 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $70,509±$8,726
- Income per person
- $35,488
- Below the poverty line
- 15.6%
- Unemployed (of the labor force)
- 3.2%
- Adults 25+ with a bachelor's degree
- 21.7%
- Adjusted gross income per tax return, 2022
- $66,0591,310 returns; wages 62% 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 62664?
FHFA's house price index for 62664, built from repeat sales and appraisals of the same homes, rose 16% from 2015 to 2025 and rose 32% from 2020 to 2025.
- Median home value (owners' estimate)
- $101,200
- Median gross rent
- $800
- Homes owned by their occupants
- 81.1%
- Housing units
- 1,435
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 62664?
49 business establishments had a location in this ZIP code in 2023, 7 fewer than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)9
- Retail trade8
- Wholesale trade6
- Finance and insurance5
- Accommodation and food services5
- Construction3
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 62664?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 62682 | San Jose | 684 | $60k | 7.7 mi |
| 62633 | Easton | 638 | $45k | 7.8 mi |
| 62642 | Greenview | 1,396 | $78k | 8.2 mi |
| 62671 | New Holland | 362 | $99k | 9.6 mi |
| 61532 | Forest City | 347 | $72k | 10.4 mi |
| 62666 | Middletown | 485 | $89k | 13.3 mi |
| 62675 | Petersburg | 6,170 | $84k | 14.9 mi |
| 62643 | Hartsburg | 797 | $76k | 14.2 mi (near) |
| 62655 | Kilbourne | 594 | $57k | 14.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.