Mark, IL
Population 522 · Illinois
About Mark, IL
Mark is a small community located in Illinois with a population of 522 residents according to the latest US Census Bureau American Community Survey data. The median household income is $79,911 per year, which is 6% above the national median of $75,149. The median age of 45 years is notably older the US median age of 38.9 years, suggesting a more established community with a higher proportion of long-term residents.
Housing Market Overview
The housing market in Mark features a median home value of $154,800, which is 37% below the national median of $244,900. This positions Mark in a moderately priced market relative to the rest of the country. Median monthly rent is $856, 26% below the national average of $1,163/month. Of the 282 total housing units, 76% are owner-occupied (190 units) and 24% are renter-occupied (61 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Mark shows an unemployment rate of 1.4%, which is lower than the national rate of 3.7%, indicating a relatively strong job market. The poverty rate stands at 4.8%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Mark have an average one-way commute time of 21.4 minutes.
Education & Demographics
22.7% of Mark residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The lower educational attainment rate may reflect the area's industry mix, with more employment in trades, manufacturing, or agricultural sectors. The community's demographic composition includes 7.5% White, 0.0% Hispanic or Latino, 0.0% Black or African American, and 0.0% Asian residents, with 1.7% of the population being foreign-born.
Cost of Living in Mark, IL
Compared to national averages, Mark has a median household income of $79,911 (6% above the national median of $75,149). Home values average $154,800, which is 37% below the national median. Monthly rent at $856 is 26% below the US average of $1,163. Within Illinois, Mark's income is 6% above the state average of $75,072, and home values are 7% below the state median of $165,779.
Why Live in Mark, IL?
Mark offers a strong local economy with a median household income of $79,911, well above the national average, and affordable housing with a median home value of $154,800, below the US average of $244,900, and rent that’s lower than the national average at $856/month. Additionally, the city features a strong job market with an unemployment rate of just 1.4%, and a low poverty rate of 4.8%, better than the national average, and short commute times averaging just 21.4 minutes.
Mark has a population of 522 with a median age of 45 years. Compare Mark with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Mark
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Keithsburg | 520 | $46,875 | $58,800 | Compare |
| Palmyra | 524 | $46,477 | $86,400 | Compare |
| Altona | 519 | $67,125 | $89,200 | Compare |
| Spring Bay | 519 | $61,111 | $134,900 | Compare |
| New Haven | 528 | $33,977 | $50,400 | Compare |
| Pittsburg | 515 | $54,063 | $101,900 | Compare |
| Lenzburg | 513 | $44,722 | $92,500 | Compare |
| Strasburg | 513 | $65,833 | $101,200 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare Mark With Other Cities
Frequently Asked Questions about Mark
What is the population of Mark, IL?
The population of Mark, IL is 522 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in Illinois.
What is the median household income in Mark?
The median household income in Mark, IL is $79,911 per year, which is 6% above the national median of $75,149.
What is the median home value in Mark?
The median home value in Mark, IL is $154,800, which is 37% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Mark?
The median monthly rent in Mark, IL is $856, which is 26% below the national average of $1,163/month.
What is the unemployment rate in Mark?
The unemployment rate in Mark, IL is 1.4%, compared to the national average of 3.7%. This lower-than-average rate suggests a relatively healthy local job market.
Is Mark, IL a good place to live?
Mark offers above-average incomes, affordable housing, and a strong job market. With a population of 522 and a median age of 45, the city appeals to a broad range of residents.
How educated is Mark, IL?
22.7% of residents in Mark aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The educational profile reflects the area's industry mix and employment landscape.
What is the cost of living in Mark?
Key cost-of-living indicators for Mark, IL: median home value is $154,800 (37% below national), median rent is $856/month, and median household income is $79,911. The home-value-to-income ratio is 1.9x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Mark?
The poverty rate in Mark, IL is 4.8%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Mark, IL?
Mark's population is 7.5% White, 0.0% Hispanic or Latino, 0.0% Black or African American, 0.0% Asian, and 0.0% two or more races. 1.7% of residents are foreign-born.