What is the population of Eureka city?

Eureka city has 5,095 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #333 of 1,462 in Illinois.

What is the median household income in Eureka city?

Median household income in Eureka city is $55,172 a year, 29.8% below the national figure of $78,538.

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

Median gross rent is $680 a month and the median home value is $154,600, so rent absorbs about 14.8% of median household income.

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

Homes cost about 2.8× the local median income here versus roughly 3.9× nationally, so Eureka city is more affordable to buy in than the typical US market, and rent takes 14.8% of median income against the 30% cost-burden line.

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

Illinois · Census place 24543

Eureka, IL population, income and ZIP codes

Quick answer

The population of the city of Eureka, Illinois (Eureka, IL — Census place “Eureka city”) is 5,095 residents, ranking #333 of 1462 places in Illinois. Median household income is $55,172, the median home is worth $154,600 and median gross rent runs $680 a month. Looking for the Eureka Illinois ZIP code list? 1 ZIP codes serve Eureka, IL: 61530.

Population: 5,095Eureka city residents
Median household income: $55,172Past 12 months, inflation adjusted
Median home value: $154,600Owner-occupied units
Median gross rent: $680Rent plus utilities, monthly
Median age: 40.7 yrsAll residents
Homeownership rate: 66.6%Owner-occupied households

Eureka ZIP codes (Illinois)

Census ZCTAs whose delivery area overlaps Eureka.

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

61530

What the numbers mean in Eureka city

Housing cost measured against local earnings.

A household earning the Eureka city median would spend about 14.8% 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 2.8× the median household income; nationally that ratio sits near 4.5×. Poverty affects 13.9% of residents and 66.6% of households own their home.

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

Eureka city, IL in context

How this area compares with national benchmarks.

Eureka city is a mid-size town in Illinois, with 5,095 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #333 of 1,462 ranked by population — larger than 77% of them. The median age here is 40.7 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 Eureka city earn a median of $55,172 a year, 29.8% below the national figure of $78,538 and 26% below the $74,244 median for the 698 Illinois cities we cover. 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 13.9% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Eureka city is valued at $154,600, 49% below the national figure and 14% below the $179,100 peer median, while median gross rent runs $680 a month, 51.6% below the national figure, or roughly $8,160 across a full year. A household on the local median income would put about 14.8% 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 2.8×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 66.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

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 Illinois.

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Frequently asked questions

Common questions about this area.

What is the population of Eureka city?: Eureka city has 5,095 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #333 of 1,462 in Illinois.
What is the median household income in Eureka city?: Median household income in Eureka city is $55,172 a year, 29.8% below the national figure of $78,538.
How much does it cost to rent or buy in Eureka city?: Median gross rent is $680 a month and the median home value is $154,600, so rent absorbs about 14.8% of median household income.
Is Eureka city affordable compared with the rest of the US?: Homes cost about 2.8× the local median income here versus roughly 3.9× nationally, so Eureka city is more affordable to buy in than the typical US market, and rent takes 14.8% of median income against the 30% cost-burden line.
How current is this Eureka 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.