• county
  • FIPS 17155
  • Largest town: Granville

Putnam County, Illinois

Putnam County had 5,633 residents in the Census Vintage 2024 estimate, on 160.1 square miles of land. It ranks 94th of 102 in Illinois by population and 102nd by land area.

Population
5,633
#94 of 102 in Illinois · #2,765 in US
Area
160.1 sq mi
#102 of 102 in Illinois · #3,052 in US
Density
35 / sq mi
#67 of 102 in Illinois · #1,792 in US
Median household income
$75,469
#20 of 102 in Illinois · #643 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Putnam County within Illinois. Pin: Springfield.

Measure from here

Tools and pages that start from Putnam County

Putnam County population, land area and income

Putnam County had 5,633 residents in the Census Vintage 2024 estimate, on 160.1 square miles of land. It ranks 94th of 102 in Illinois by population and 102nd by land area. That works out to 35.2 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Illinois has 24,447 residents, so Putnam County has 23% of the typical county's population.

Its SAIPE 2023 median household income of $75,469 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

5,633

3144th1st

2765th of 3,144 (US)

Land area

160 sq mi

3144th1st

3052nd of 3,144 (US)

Density

35.2 / sq mi

3144th1st

1792nd of 3,144 (US)

Median household income

$75,469

3143rd1st

643rd of 3,143 (US)

Rank within Illinois (102)

Population

5,633

102nd1st

94th of 102 (IL)

Land area

160 sq mi

102nd1st

102nd of 102 (IL)

Density

35.2 / sq mi

102nd1st

67th of 102 (IL)

Median household income

$75,469

102nd1st

20th of 102 (IL)

How Putnam County's population changed since 2020

Putnam County gained 2 residents between the July 2020 and July 2024 estimates, a rise of 0.0%. That ranks 15th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, Putnam County recorded 200 births and 233 deaths, a natural change of -33. Net international migration added +0 and net domestic migration, people moving to or from other US counties, came to +33. The largest single component was natural change, which removed 33 people.

5,63120205,58920215,56220225,58820235,6332024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
200
Deaths
233
Net international migration
+0
Net domestic migration
+33
Change, July 2023 to July 2024
+45

Where Putnam County is

The Census internal point of Putnam County is at 41.199000, -89.298300. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Putnam County outlined. Dots are towns of 1,000+ people with residents in it.

Piatt County: -0.3%Hamilton County: -2.2%Williamson County: -0.1%Edgar County: -2.4%Macoupin County: -2.3%Marshall County: -1.3%Putnam County: +0.0%Richland County: -2.8%Washington County: -1.4%Lee County: -1.5%Douglas County: +0.2%Cook County: -1.6%Effingham County: -0.3%Edwards County: -3.6%Cass County: -2.0%Clay County: -3.4%Knox County: -2.2%LaSalle County: -0.9%Cumberland County: -1.3%Warren County: -3.7%Moultrie County: -0.9%Menard County: -2.5%Fayette County: -1.5%Boone County: -0.0%Lawrence County: -3.2%Marion County: -3.2%Champaign County: +3.0%Clark County: -2.4%Ford County: -0.4%Wayne County: -1.4%Logan County: -1.4%Grundy County: +2.5%Jasper County: -1.8%Crawford County: -1.3%McDonough County: -1.7%Clinton County: +0.5%Perry County: -3.0%Montgomery County: -2.2%Henry County: -2.0%Livingston County: -1.2%Scott County: -3.8%Alexander County: -11.2%Bureau County: -2.2%Brown County: +1.1%Mason County: -3.9%Calhoun County: -4.1%Greene County: -4.3%Coles County: -1.4%Kendall County: +8.2%Lake County: +0.7%Mercer County: -2.2%St. Clair County: -2.3%Wabash County: -3.0%Bond County: -1.7%DuPage County: +0.6%Gallatin County: -5.2%Stephenson County: -3.3%McHenry County: +1.9%White County: -3.0%Saline County: -3.9%Christian County: -2.2%Sangamon County: -1.0%Massac County: -3.6%Macon County: -2.9%Johnson County: -0.0%Jo Daviess County: -2.6%Peoria County: -1.0%DeKalb County: +1.0%Pope County: -1.5%De Witt County: -0.9%Schuyler County: -1.7%Fulton County: -3.1%Ogle County: -0.8%Jersey County: -1.6%Iroquois County: -3.3%Kankakee County: -0.9%Rock Island County: -1.1%Pulaski County: -5.8%Kane County: +0.9%Union County: -2.4%Whiteside County: -1.7%Woodford County: -0.3%Carroll County: -1.5%Adams County: -2.3%Hardin County: -2.6%Madison County: -1.0%Hancock County: -3.1%Monroe County: +0.0%Tazewell County: -1.1%Jackson County: -0.1%Vermilion County: -3.9%Randolph County: -0.6%McLean County: +0.5%Morgan County: -2.6%Shelby County: -1.7%Will County: +1.7%Winnebago County: -0.4%Jefferson County: -2.4%Stark County: -2.2%Henderson County: -4.5%Pike County: -2.6%Franklin County: -1.8%
Change 2020 to 2024
  1. < -3.0%
  2. < -2.2%
  3. < -1.4%
  4. < -0.3%
  5. ≥ -0.3%
no data

Orange pin: Putnam County internal point. Dark pin: Springfield.

Internal point

Decimal
41.199000, -89.298300
DMS
41°11'56.40"N 89°17'53.88"W
UTM
16N 307285.0E 4563395.0N
Geohash
dp26runcw
Plus code
86HG5PX2+JM

Towns in Putnam County

One incorporated place of 1,000+ people has residents in Putnam County, 1,331 people together, or 24% of the county. Each figure counts only the part of the town inside Putnam County; towns marked "part" extend into another county. The largest is Granville with 1,331.

  1. 01Granville1,331
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Putnam County

The Census 2024 county adjacency file lists 3 neighbors for Putnam County. The most populous is LaSalle County, IL, with 108,390 residents. Distances run between Census internal points in a straight line.

Distance to Springfield and the nearest big city

Springfield is 99.7 miles S of Putnam County's internal point in a straight line. The nearest place of 100,000 or more is Peoria, IL (population 111,696), 35.1 miles away. The nearest place of 10,000 or more is Streator, IL (population 12,295), 24.9 miles away.

Putnam County FIPS code

The FIPS code of Putnam County is 17155: state code 17 for Illinois plus county code 155. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $75,469.

Questions people ask

What is the population of Putnam County, Illinois?

The Census Vintage 2024 estimate for July 1, 2024 is 5,633. That is up 2 people (0.0%) from the July 2020 estimate of 5,631.

What is the FIPS code of Putnam County?

17155. The first two digits (17) are Illinois; the last three (155) identify the county.

What is the largest town in Putnam County?

Granville, with 1,331 residents inside Putnam County in 2024.

Which counties border Putnam County?

3 county-equivalents border it in the Census 2024 adjacency file: LaSalle County, IL; Bureau County, IL; Marshall County, IL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.