What is the population of Grinnell city?

Grinnell city has 9,527 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #44 of 1,026 in Iowa.

What is the median household income in Grinnell city?

Median household income in Grinnell city is $64,426 a year, 18% below the national figure of $78,538.

How much does it cost to rent or buy in Grinnell city?

Median gross rent is $876 a month and the median home value is $191,700, so rent absorbs about 16.3% of median household income.

Is Grinnell city affordable compared with the rest of the US?

Homes cost about 3× the local median income here versus roughly 3.9× nationally, so Grinnell city is more affordable to buy in than the typical US market, and rent takes 16.3% of median income against the 30% cost-burden line.

Aerial view of a dense city center, illustrating the US cities ZIP code directory

Iowa · Census place 33105

Grinnell, IA population, income and ZIP codes

Quick answer

The population of the city of Grinnell, Iowa (Grinnell, IA — Census place “Grinnell city”) is 9,527 residents, ranking #44 of 1026 places in Iowa. Median household income is $64,426, the median home is worth $191,700 and median gross rent runs $876 a month. Looking for the Grinnell Iowa ZIP code list? 1 ZIP codes serve Grinnell, IA: 50112.

Population: 9,527Grinnell city residents
Median household income: $64,426Past 12 months, inflation adjusted
Median home value: $191,700Owner-occupied units
Median gross rent: $876Rent plus utilities, monthly
Median age: 37.9 yrsAll residents
Homeownership rate: 65.1%Owner-occupied households

Grinnell ZIP codes (Iowa)

Census ZCTAs whose delivery area overlaps Grinnell.

The Grinnell IA ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.

50112

What the numbers mean in Grinnell city

Housing cost measured against local earnings.

A household earning the Grinnell city median would spend about 16.3% 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 3.0× the median household income; nationally that ratio sits near 4.5×. Poverty affects 10.9% of residents and 65.1% of households own their home.

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

Grinnell city, IA in context

How this area compares with national benchmarks.

Grinnell city is a mid-size town in Iowa, with 9,527 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #44 of 1,026 ranked by population — larger than 95% of them. The median age here is 37.9 years against 39.1 nationally, a slightly younger 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 Grinnell city earn a median of $64,426 a year, 18% below the national figure of $78,538 and 5% below the $67,791 median for the 290 Iowa cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 10.9% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Grinnell city is valued at $191,700, 36.8% below the national figure and 23% above the $156,300 peer median, while median gross rent runs $876 a month, 37.7% below the national figure, or roughly $10,512 across a full year. A household on the local median income would put about 16.3% 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×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 65.1% 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.

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.

Compare with nearby places

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Frequently asked questions

Common questions about this area.

What is the population of Grinnell city?: Grinnell city has 9,527 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #44 of 1,026 in Iowa.
What is the median household income in Grinnell city?: Median household income in Grinnell city is $64,426 a year, 18% below the national figure of $78,538.
How much does it cost to rent or buy in Grinnell city?: Median gross rent is $876 a month and the median home value is $191,700, so rent absorbs about 16.3% of median household income.
Is Grinnell city affordable compared with the rest of the US?: Homes cost about 3× the local median income here versus roughly 3.9× nationally, so Grinnell city is more affordable to buy in than the typical US market, and rent takes 16.3% of median income against the 30% cost-burden line.
How current is this Grinnell 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.