
Polk County · Iowa
ZIP code 50312
- Population
- 15,492
- Median income
- $82,720
- Median home
- $274,400
- Sales tax
- 7%
ZCTA residents
Household, past 12 months
Owner-occupied value
Combined state + local
Quick answer
ZIP 50312 sits in Polk County, Iowa and is home to 15,492 people. Median household income is $82,720, the median home is worth $274,400 and median gross rent is $1,057. 64.5% of households own their home, and purchases are taxed at 7% combined.
- County
- Polk County
- State
- Iowa (IA)
- Area codes
- 515
FIPS 19153
970 ZIPs covered
NANPA codes serving this area
The numbers for 50312
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 15,492ZIP 50312 residents
- Median household income
- $82,720Past 12 months, inflation adjusted
- Median home value
- $274,400Owner-occupied units
- Median gross rent
- $1,057Rent plus utilities, monthly
- Median age
- 40.5 yrsAll residents
- Homeownership rate
- 64.5%Owner-occupied households
ZIP 50312 in context
How this area compares with national benchmarks.
ZIP 50312 is a mid-size town in Polk County, Iowa, with 15,492 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #58 of 970 ranked by population — larger than 94% of them. The median age here is 40.5 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.
Households in ZIP 50312 earn a median of $82,720 a year, 5.3% above the national figure of $78,538. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 8% of residents here, below the 12.4% national rate.
The typical owner-occupied home in ZIP 50312 is valued at $274,400, 9.6% below the national figure, while median gross rent runs $1,057 a month, 24.8% below the national figure, or roughly $12,684 across a full year. A household on the local median income would put about 15.3% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 3.3×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 64.5% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.
No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.
Reading ZIP 50312 in context
How 50312 sits inside Polk County and Iowa.
ZIP 50312 is tabulated inside Polk County, Iowa, one of 33 ZIP areas the Census publishes for that county and 970 across Iowa. This is a mid-sized suburban ZIP inside a county that is split across many delivery areas. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 50312 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.
Against its own county, 50312 reports a median household income of $82,720, 7% below the $89,323 county median, and 16% above the $71,182 typical IA ZIP. Owner-occupied homes are valued at a median of $274,400, 3% above the county figure and 81% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,057 a month, which is why it reads higher than the advertised rent on a listing for the same unit.
A taxable purchase made inside 50312 carries 7% at the register, assembled from the Des Moines jurisdiction stack: the Iowa state rate plus every county, municipal and special district levy that reaches this address. Because those district boundaries were drawn for schools, transit and hospital funding rather than for mail delivery, two addresses inside 50312 can legitimately fall under different totals — the rate shown here is the one that applies to the dominant jurisdiction.
Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 50312 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.
Sales tax in 50312
What a purchase inside this ZIP costs at checkout.
This ZIP falls inside the Des Moines rate area, so state, county, city and district levies are published here as a full stack.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 50312 compares
ZIP 50312 against the median ZIP in Polk County and across Iowa.
| Measure | ZIP 50312 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $82,720 | $89,323 | $71,182 | +16% |
| Median home value | $274,400 | $267,600 | $151,550 | +81% |
| Median gross rent | $1,057 | $1,078 | $808 | +31% |
| Population | 15,492 | 12,875 | 935 | +1557% |
Medians are computed across the 33 ZIP areas in Polk County and the 970 ZIP areas in Iowa.
Statewide rank
Where this ZIP places among all 970 Iowa ZIP areas.
- Income
- #256
- Home value
- #76
- Population
- #58
richer than 73% of 937 state ZIPs
above 92% of 922 state ZIPs
larger than 94% of 970 state ZIPs
Comparable ZIP codes
Iowa ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Polk County.
Adjacent ZIP Codes
Other ZIP codes in Polk County, Iowa.
ZIP 50312 questions
Common questions about this ZIP code.
- Where is ZIP code 50312?
- ZIP 50312 lies mostly in Polk County, Iowa. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 50312?
- Purchases are taxed at 7% combined, built from the Des Moines jurisdiction stack.
- Is 50312 expensive to live in?
- Median rent runs $1,057 a month, about 15% of median household income, and the median home is worth $274,400 — +81% against the typical Iowa ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Iowa Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.