PlainZIP

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
$78,750
Median income
$160,100
Median home value
21.0%
Bachelor's or higher

The verdict

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 Illinois average), while per-capita income is $38,583. Poverty here runs at 10.3%, with unemployment measured at 2.6%. On housing, the median home value is $160,100 (17% below the state average) with median rent at $938 per month, and 73.5% of occupied units are owner-occupied.

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 -. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Putnam County, so you can benchmark 61340 against its immediate geography rather than a national average alone.

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 61340?

44.4

Median Age

61.1%

Male

38.9%

Female

1.7%

Foreign-Born

White 100.0%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 10.8%

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

$38,583

Per Capita Income

10.3%

Poverty Rate

2.6%

Unemployment Rate

How ZIP 61340 ranks nationally

Mark, IL household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$78,750 Top 40% higher than 60% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 56.8%
Bachelor's Degree or Higher 21.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

292

Total Housing Units

260

Occupied Units

32

Vacant Units

2.10

Avg Household Size

Occupancy Type

Owner 73.5%
Renter 26.5%

$160,100

Median Home Value

-17% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 61340 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 61340 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

More ZIP Codes in Putnam County

61326 standard
Granville, IL
Pop: 2,452
61327 standard
Hennepin, IL
Pop: 1,235
61560 standard
Putnam, IL
Pop: 754
61336 standard
Magnolia, IL
Pop: 628
61335 standard
Mc Nabb, IL
Pop: 532
61363 standard
Standard, IL
Pop: 220

Related Areas

Putnam County Mark, IL Illinois

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.

Read our methodology to see how this data is sourced, computed, and verified.