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Illinois · Census place 38570

Joliet, IL population, income and ZIP codes

Quick answer

The population of the city of Joliet, Illinois (Joliet, IL — Census place “Joliet city”) is 149,785 residents, ranking #3 of 1462 places in Illinois. Median household income is $88,026, the median home is worth $248,600 and median gross rent runs $1,237 a month. Looking for the Joliet Illinois ZIP code list? 7 ZIP codes serve Joliet, IL: 60421, 60431, 60432, 60433, 60435, 60436, 60586.

Population
149,785Joliet city residents
Median household income
$88,026Past 12 months, inflation adjusted
Median home value
$248,600Owner-occupied units
Median gross rent
$1,237Rent plus utilities, monthly
Median age
35.3 yrsAll residents
Homeownership rate
73.1%Owner-occupied households

Joliet ZIP codes (Illinois)

Census ZCTAs whose delivery area overlaps Joliet.

The Joliet IL ZIP code list below covers 7 ZIP codes. Open any one for its population, income, housing and rent profile.

What the numbers mean in Joliet city

Housing cost measured against local earnings.

A household earning the Joliet city median would spend about 16.9% 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 2.8× the median household income; nationally that ratio sits near 4.5×. Poverty affects 11% of residents and 73.1% of households own their home.

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

Joliet city, IL in context

How this area compares with national benchmarks.

Joliet city is a mid-size city in Illinois, with 149,785 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #3 of 1,462 ranked by population — larger than 99% of them. The median age here is 35.3 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this size the Census also publishes one-year estimates; the five-year values used here are steadier and let you compare against smaller neighbours on the same basis.

Households in Joliet city earn a median of $88,026 a year, 12.1% above the national figure of $78,538 and 19% above 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 11% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Joliet city is valued at $248,600, 18.1% below the national figure and 39% above the $179,100 peer median, while median gross rent runs $1,237 a month, 12% below the national figure, or roughly $14,844 across a full year. A household on the local median income would put about 16.9% 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 2.8×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 73.1% 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.

More Illinois coverage.

Frequently asked questions

Common questions about this area.

What is the population of Joliet city?
Joliet city has 149,785 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #3 of 1,462 in Illinois.
What is the median household income in Joliet city?
Median household income in Joliet city is $88,026 a year, 12.1% above the national figure of $78,538.
How much does it cost to rent or buy in Joliet city?
Median gross rent is $1,237 a month and the median home value is $248,600, so rent absorbs about 16.9% of median household income.
Is Joliet 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 Joliet city is more affordable to buy in than the typical US market, and rent takes 16.9% of median income against the 30% cost-burden line.
How current is this Joliet city data?
All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. At this size the Census also publishes one-year estimates; the five-year values used here are steadier and let you compare against smaller neighbours on the same basis.