Iowa · Census place 42015
Knoxville, IA population, income and ZIP codes
Quick answer
The population of the city of Knoxville, Iowa (Knoxville, IA — Census place “Knoxville city”) is 7,493 residents, ranking #54 of 1026 places in Iowa. Median household income is $70,136, the median home is worth $147,600 and median gross rent runs $810 a month. Looking for the Knoxville Iowa ZIP code list? 1 ZIP codes serve Knoxville, IA: 50138.
- Population
- 7,493Knoxville city residents
- Median household income
- $70,136Past 12 months, inflation adjusted
- Median home value
- $147,600Owner-occupied units
- Median gross rent
- $810Rent plus utilities, monthly
- Median age
- 42.2 yrsAll residents
- Homeownership rate
- 74.3%Owner-occupied households
Knoxville ZIP codes (Iowa)
Census ZCTAs whose delivery area overlaps Knoxville.
The Knoxville IA ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.
What the numbers mean in Knoxville city
Housing cost measured against local earnings.
A household earning the Knoxville city median would spend about 13.9% of gross income on the median rent. The 30% mark is the federal threshold for cost burden, so anything above it signals a stretched rental market. The median home costs 2.1× the median household income; nationally that ratio sits near 4.5×. Poverty affects 9% of residents and 74.3% of households own their home.
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
Knoxville city, IA in context
How this area compares with national benchmarks.
Knoxville city is a mid-size town in Iowa, with 7,493 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #54 of 1,026 ranked by population — larger than 94% of them. The median age here is 42.2 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 Knoxville city earn a median of $70,136 a year, 10.7% below the national figure of $78,538 and 3% above the $67,791 median for the 290 Iowa cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 9% of residents here, below the 12.4% national rate.
The typical owner-occupied home in Knoxville city is valued at $147,600, 51.4% below the national figure and 6% below the $156,300 peer median, while median gross rent runs $810 a month, 42.4% below the national figure, or roughly $9,720 across a full year. A household on the local median income would put about 13.9% 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 2.1×, against roughly 3.9× nationally, so purchase prices are unusually low against local pay, the pattern in places where supply is plentiful and wage growth has been flat. 74.3% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.
All values below were released by the Census for this exact geography, with no gap-filling on our side. 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.
Compare with nearby places
Places of similar size in Iowa.
- Creston city 7,466
- Decorah city 7,597
- Charles City city 7,321
- Clear Lake city 7,603
- Washington city 7,314
- Webster City city 7,769
- Hiawatha city 7,178
- Perry city 7,928
Keep going
More Iowa coverage.
Frequently asked questions
Common questions about this area.
- What is the population of Knoxville city?
- Knoxville city has 7,493 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #54 of 1,026 in Iowa.
- What is the median household income in Knoxville city?
- Median household income in Knoxville city is $70,136 a year, 10.7% below the national figure of $78,538.
- How much does it cost to rent or buy in Knoxville city?
- Median gross rent is $810 a month and the median home value is $147,600, so rent absorbs about 13.9% of median household income.
- Is Knoxville city affordable compared with the rest of the US?
- Homes cost about 2.1× the local median income here versus roughly 3.9× nationally, so Knoxville city is more affordable to buy in than the typical US market, and rent takes 13.9% of median income against the 30% cost-burden line.
- How current is this Knoxville city data?
- All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. 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.