Illinois · Census place 41859
Lanark, IL population, income and ZIP codes
Quick answer
The population of the city of Lanark, Illinois (Lanark, IL — Census place “Lanark city”) is 1,510 residents, ranking #583 of 1462 places in Illinois. Median household income is $66,250, the median home is worth $97,100 and median gross rent runs $781 a month. Looking for the Lanark Illinois ZIP code list? 1 ZIP codes serve Lanark, IL: 61046.
- Population
- 1,510Lanark city residents
- Median household income
- $66,250Past 12 months, inflation adjusted
- Median home value
- $97,100Owner-occupied units
- Median gross rent
- $781Rent plus utilities, monthly
- Median age
- 36.9 yrsAll residents
- Homeownership rate
- 81%Owner-occupied households
Lanark ZIP codes (Illinois)
Census ZCTAs whose delivery area overlaps Lanark.
The Lanark IL ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.
What the numbers mean in Lanark city
Housing cost measured against local earnings.
A household earning the Lanark city median would spend about 14.1% 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 1.5× the median household income; nationally that ratio sits near 4.5×. Poverty affects 14.3% of residents and 81% of households own their home.
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
Lanark city, IL in context
How this area compares with national benchmarks.
Lanark city is a small town in Illinois, with 1,510 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #583 of 1,462 ranked by population — larger than 60% of them. The median age here is 36.9 years against 39.1 nationally, a slightly younger 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 Lanark city earn a median of $66,250 a year, 15.6% below the national figure of $78,538 and 11% 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 14.3% of residents here, above the 12.4% national rate.
The typical owner-occupied home in Lanark city is valued at $97,100, 68% below the national figure and 46% below the $179,100 peer median, while median gross rent runs $781 a month, 44.5% below the national figure, or roughly $9,372 across a full year. A household on the local median income would put about 14.1% 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 1.5×, 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. 81% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. 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 Illinois.
- Malta village 1,507
- Warsaw city 1,511
- Kirkland village 1,497
- Mount Pulaski city 1,513
- Virginia city 1,491
- Mount Carroll city 1,515
- Durand village 1,485
- Grayville city 1,515
Keep going
More Illinois coverage.
Frequently asked questions
Common questions about this area.
- What is the population of Lanark city?
- Lanark city has 1,510 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #583 of 1,462 in Illinois.
- What is the median household income in Lanark city?
- Median household income in Lanark city is $66,250 a year, 15.6% below the national figure of $78,538.
- How much does it cost to rent or buy in Lanark city?
- Median gross rent is $781 a month and the median home value is $97,100, so rent absorbs about 14.1% of median household income.
- Is Lanark city affordable compared with the rest of the US?
- Homes cost about 1.5× the local median income here versus roughly 3.9× nationally, so Lanark city is more affordable to buy in than the typical US market, and rent takes 14.1% of median income against the 30% cost-burden line.
- How current is this Lanark 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.