Residential delivery area · Michigan
ZIP Code 49318: Casnovia, MI
ZIP code 49318 uses the postal name Casnovia, Michigan and lies mostly in Muskegon County (73% of its land), reaching into Ottawa County and Kent County (Census 2020 ZIP-county file). About 1,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $81,591 (Census Bureau, ACS 2020-2024). By Census place, 5% of its land lies in Casnovia; 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Casnovia · its only residential ZIP
- County
- Muskegon County (73%); Ottawa County (23%); Kent County (4%)
- Census places
- Casnovia
- Metro area
- Muskegon-Norton Shores, MI
- House district
- MI-2 119th Congress
- State
- Michigan
- Time zone
- Eastern
- Land area
- 20.1 sq mi · 80 people per sq mi
Where is ZIP code 49318?
49318 centers on 43.227°, -85.820° and covers 20.1 square miles of land plus 0.2 of water. It borders 4 ZIP codes: 49303, 49330, 49403, 49451.
The map draws ZIP code areas only. For the streets inside 49318, 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 49318 compare with the rest of Muskegon County?
| Measure | 49318 | In Muskegon County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 1,604 | 16th of 19 | 736th of 992 |
| Median household income | $82k | 9th of 16 | 240th of 774 |
| Median home value | $241k | 8th of 16 | 272nd of 779 |
Its median household income is higher than in 64% of U.S. residential ZIP codes, and it is denser than 50% 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 49318?
The 2020 Census counted 1,530 people in 49318; the ACS, which samples households over 2020-2024, estimates 1,604. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 1,604±272 (90% margin)
- 2020 Census count
- 1,530
- Households
- 518
- Median age
- 36.5
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 49318?
Of the 1,604 people the ACS estimates in 49318, 29.0% are under 18 and 17.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.2%).
- Under 1829.0%
- 18 to 6453.8%
- 65 and older17.2%
- White, not Hispanic88.2%
- Hispanic or Latino5.5%
- Other or two or more2.9%
- Asian, not Hispanic2.1%
- Black, not Hispanic1.4%
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 49318 earn?
Median household income is $81,591 (ACS 2020-2024), the 9th highest of the 16 ranked ZIP codes in Muskegon County.
- Median household income
- $81,591±$13,000
- Income per person
- $32,569
- Below the poverty line
- 11.5%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 20.1%
- Adjusted gross income per tax return, 2022
- $64,815720 returns; wages 73% 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 49318?
FHFA's house price index for 49318, built from repeat sales and appraisals of the same homes, rose 113% from 2015 to 2025 and rose 51% from 2020 to 2025, and moved −6.4% in 2025.
- Median home value (owners' estimate)
- $240,600
- Median gross rent
- $990
- Homes owned by their occupants
- 87.8%
- Housing units
- 540
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 49318?
19 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction4
- Retail trade4
- Manufacturing3
- Wholesale trade3
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 49318?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 49303 | Bailey | 772 | $79k | 3.7 mi |
| 49330 | Kent City | 5,599 | $76k | 4.3 mi |
| 49403 | Conklin | 2,467 | $85k | 6.3 mi |
| 49451 | Ravenna | 6,298 | $72k | 7.5 mi |
| 49327 | Grant | 8,887 | $70k | 6.8 mi (near) |
| 49345 | Sparta | 13,512 | $86k | 7.7 mi (near) |
| 49321 | Comstock Park | 15,970 | $78k | 12.7 mi (near) |
| 49404 | Coopersville | 9,117 | $86k | 13.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.