What is the population of Fairfield city?

Fairfield city has 4,658 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #345 of 1,462 in Illinois.

What is the median household income in Fairfield city?

Median household income in Fairfield city is $41,026 a year, 47.8% below the national figure of $78,538.

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

Median gross rent is $558 a month and the median home value is $91,800, so rent absorbs about 16.3% of median household income.

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

Homes cost about 2.2× the local median income here versus roughly 3.9× nationally, so Fairfield 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.

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Illinois · Census place 24816

Fairfield, IL population, income and ZIP codes

Quick answer

The population of the city of Fairfield, Illinois (Fairfield, IL — Census place “Fairfield city”) is 4,658 residents, ranking #345 of 1462 places in Illinois. Median household income is $41,026, the median home is worth $91,800 and median gross rent runs $558 a month. Looking for the Fairfield Illinois ZIP code list? 1 ZIP codes serve Fairfield, IL: 62837.

Population: 4,658Fairfield city residents
Median household income: $41,026Past 12 months, inflation adjusted
Median home value: $91,800Owner-occupied units
Median gross rent: $558Rent plus utilities, monthly
Median age: 44.5 yrsAll residents
Homeownership rate: 68.1%Owner-occupied households

Fairfield ZIP codes (Illinois)

Census ZCTAs whose delivery area overlaps Fairfield.

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

62837

What the numbers mean in Fairfield city

Housing cost measured against local earnings.

A household earning the Fairfield 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 2.2× the median household income; nationally that ratio sits near 4.5×. Poverty affects 18.5% of residents and 68.1% of households own their home.

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

Fairfield city, IL in context

How this area compares with national benchmarks.

Fairfield city is a small town in Illinois, with 4,658 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #345 of 1,462 ranked by population — larger than 76% of them. The median age here is 44.5 years against 39.1 nationally, a slightly older profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Fairfield city earn a median of $41,026 a year, 47.8% below the national figure of $78,538 and 45% below the $74,244 median for the 698 Illinois 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 18.5% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Fairfield city is valued at $91,800, 69.7% below the national figure and 49% below the $179,100 peer median, while median gross rent runs $558 a month, 60.3% below the national figure, or roughly $6,696 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 2.2×, 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. 68.1% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

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.

More Illinois coverage.

Frequently asked questions

Common questions about this area.

What is the population of Fairfield city?: Fairfield city has 4,658 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #345 of 1,462 in Illinois.
What is the median household income in Fairfield city?: Median household income in Fairfield city is $41,026 a year, 47.8% below the national figure of $78,538.
How much does it cost to rent or buy in Fairfield city?: Median gross rent is $558 a month and the median home value is $91,800, so rent absorbs about 16.3% of median household income.
Is Fairfield city affordable compared with the rest of the US?: Homes cost about 2.2× the local median income here versus roughly 3.9× nationally, so Fairfield 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 Fairfield city data?: All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.