Mark, IL · standard
ZIP Code 61340
Putnam County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 292
- 221/sq mi High-density area
- $78,750
- Median income Near-median income area
- $160,100
- Median home value Below-median home value
- 21.0%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Mark pairs an above-median household income with below-median home values, in a low-density, homeowner-dominated area.
- Top 40%
- household income, US ZIPs
- 30th pct
- home value, US ZIPs
- 221
- people per sq mi
- 74%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 61340 against every reporting US ZIP.
ZIP code 61340 is a sparsely populated ZIP (a standard USPS delivery area) in Mark, Putnam County, Illinois, home to just 292 residents across 1.3 square miles, a density of 221 people per square mile, in the Chicago time zone.
ZIP 61340 lands in the middle-income range, with a median household income of $78,750 (2% below the average Illinois ZIP), while per-capita income is $38,583. The poverty rate is 10.3%, with unemployment at 2.6%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $160,100 (17% below the average Illinois ZIP), and median rent is $938; owner occupancy is 73.5%.
Educational attainment sits below the national norm: 21.0% of adults hold a bachelor's degree or higher, the median age is 44.4, and the average commute is -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Putnam County, so 61340 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 61340, Mark, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
292
Population
1.3
Area (sq mi)
221
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 61340?
44.4
Median Age
61.1%
Male
38.9%
Female
1.7%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$78,750
Median Household Income
-2% vs state ZIP avg
$38,583
Per Capita Income
10.3%
Poverty Rate
2.6%
Unemployment Rate
How ZIP 61340 ranks among Illinois ZIPs
Mark, IL household income vs. every Illinois ZIP code
Median household income among 1,334 reporting Illinois ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$78,750 Top 44% higher than 56% of 1,334 Illinois ZIPs
Each bar is a $20K-wide band; taller bars hold more Illinois ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
292housing units
292
Total Housing Units
260
Occupied Units
32
Vacant Units
2.10
Avg Household Size
Occupancy Type
$160,100
Median Home Value
-17% vs state ZIP avg
$938
Median Rent
1968
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 10 business establishments in ZIP 61340, employing approximately 234 people with a combined annual payroll of $13,138,000.
10
Businesses
234
Employees
$13.1M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 4 | 40.0% |
| Manufacturing | 3 | 30.0% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 61340 vs 61326 →
ZIP 61340 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61362
Spring Valley (61362)
5,911 residents
- 61326
Granville (61326)
2,452 residents
- 61322 1,647
Depue (61322)
1,647 residents
- 61329 1,303
Ladd (61329)
1,303 residents
- 61327 1,235
Hennepin (61327)
1,235 residents
- 61335 532
Mc Nabb (61335)
532 residents
- 61315 322
Bureau (61315)
322 residents
- 61359 312
Seatonville (61359)
312 residents
- 61340 292
Mark (61340)
292 residents
What this shows Among its immediate neighbors, ZIP 61340 ranks #9 by population - useful context the national average alone can't give.
ZIP 61340 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61327
Hennepin (61327)
$89,306 median income
- 61340
Mark (61340)
$78,750 median income
- 61316
Cedar Point (61316)
$74,375 median income
- 61335
Mc Nabb (61335)
$71,750 median income
- 61362
Spring Valley (61362)
$71,558 median income
- 61326
Granville (61326)
$70,880 median income
- 61329
Ladd (61329)
$67,321 median income
- 61322
Depue (61322)
$65,795 median income
- 61363
Standard (61363)
$60,000 median income
What this shows By household income, ZIP 61340 ranks #2 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 61326 | Granville, IL | 2,452 | 1.4 mi |
| 61363 | Standard, IL | 220 | 3.5 mi |
| 61327 | Hennepin, IL | 1,235 | 3.9 mi |
| 61362 | Spring Valley, IL | 5,911 | 6.6 mi |
| 61322 | Depue, IL | 1,647 | 5.0 mi |
| 61359 | Seatonville, IL | 312 | 7.1 mi |
| 61335 | Mc Nabb, IL | 532 | 6.9 mi |
| 61316 | Cedar Point, IL | 282 | 6.5 mi |
| 61315 | Bureau, IL | 322 | 6.2 mi |
| 61329 | Ladd, IL | 1,303 | 8.7 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 61340, both outside IL so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Putnam County
Related Areas
Frequently Asked Questions
What county is ZIP code 61340 in?
ZIP code 61340 (Mark) is located in Putnam County, Illinois. Putnam County contains multiple ZIP codes, see the full list at /counties/putnam-il.
What is the population of ZIP code 61340?
ZIP code 61340 in Mark, IL has a population of 292 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 61340?
The median household income in ZIP 61340 is $78,750, which is 3% above the national average of $76,288.
What is the average home value in ZIP 61340?
The median home value in ZIP 61340 is $160,100, which is 42% below the national average of $278,155.
What is the demographic makeup of ZIP 61340?
The largest racial group in ZIP 61340 is White at 100.0%. Hispanic or Latino residents make up 10.8% of the population.
How many businesses are in ZIP code 61340?
ZIP code 61340 has 10 business establishments employing approximately 234 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 61340?
In ZIP code 61340, 56.8% of residents aged 25+ have a high school diploma or higher, and 21.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 61340?
In ZIP code 61340, approximately 73.5% of occupied housing units are owner-occupied and 26.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 61340?
The poverty rate in ZIP code 61340 is 10.3% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 61340's numbers, next.
- See how ZIP 61340 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Mark, IL ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.