County · Illinois

Marshall County, Illinois

Marshall County, Illinois. Marshall County had 11,473 residents in 2025 by the Census Bureau's estimate, down 2.4% since 2020, a steeper fall than Illinois's (−0.8%). It holds 21 places (9 cities, villages and boroughs and 12 towns and townships) and 5 census tracts. GEOID 17123.

Marshall County is one of the 5 counties of the Peoria, IL metropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

11,473

Census Bureau estimate (no margin published)
2020 Census count: 11,742 · ACS 2020-2024: 11,647

Median household income

$71,585

±$3,594 (90% margin)
Illinois: $83,390

Median home value

$142,800

±$8,929 (90% margin)
Illinois: $263,300

Median gross rent

$782

±$84 (90% margin)
Illinois: $1,274

How many people live in Marshall County, and is it growing?

The 2020 Census counted 11,742 residents in Marshall County. The Census Bureau estimates 11,473 for July 1, 2025, down 2.4% since 2020, a steeper fall than Illinois's (−0.8%). The 2020-2024 American Community Survey puts the population at 11,647 over 387 square miles of land.

July 2020→2021 −45 (11,668)
2021→2022 −10 (11,658)
2022→2023 +5 (11,663)
2023→2024 −92 (11,571)
2024→2025 −98 (11,473)

Marshall County in Illinois. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Marshall County	Illinois	Change since 2015-2019
Total population	11,647	12,694,798	−32
Households	5,094±159	5,036,449	no clear change
Average household size	2.23±0.07	2.46	−0.10
Housing units	5,815±32	5,457,452	−104

Marshall County's population since 2000

From 13,180 in 2000 to 11,473 in 2025: down 13.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 13,180
2005 (estimate) 12,952
2010 Census 12,640
2015 (estimate) 11,925
2020 Census 11,742
2025 (estimate) 11,473

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Marshall County?

Marshall County holds 21 places: 9 cities, villages and boroughs (incorporated places) and 12 towns and townships (county subdivisions with their own government). The largest is Henry Township with 2,501 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Marshall County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Henry Township	township	2,558	2,542±24	$64,948	$116,400	14.1%	100%
Lacon Township	township	2,327	2,322±217	$69,340	$143,300	13.4%	100%
Henry	city	2,320	2,441±60	$65,577	$117,000	14.1%	100%
Lacon	city	1,878	1,916±227	$63,162	$121,900	14.8%	100%
Bennington Township	township	1,564	1,641±147	$70,608	$124,700	13.6%	100%
Toluca	city	1,340	1,477±148	$69,545	$113,500	13.8%	100%
Evans Township	township	1,172	1,467±239	$70,202	$141,700	11.6%	100%
Steuben Township	township	1,113	1,084±138	$66,477	$154,800	8.8%	100%
Wenona	city	974	999±191	$43,300	$101,100	17.0%	98%
Roberts Township	township	890	875±165	$87,721	$158,300	9.4%	100%
Hopewell TownshipGEOID 1712336152	township	520	418±136	$107,561	$257,500	0.0%	100%
Hopewell	village	421	604±115	$120,592	$182,700	3.0%	100%
Richland Township, Marshall CountyGEOID 1712363589	township	419	337±108	$79,375	$210,900	3.0%	100%
Varna	village	375	387±96	$62,639	$89,300	20.2%	100%
Sparland	village	366	295±76	$43,125	$83,600	21.7%	100%
Bell Plain TownshipGEOID 1712304949	township	332	207±59	$53,750	$119,600	7.7%	100%
La Prairie TownshipGEOID 1712342093	township	326	285±79	$135,357	$205,900	4.2%	100%
Whitefield TownshipGEOID 1712381230	township	275	213±58	$79,375	$163,800	26.3%	100%
Saratoga Township, Marshall CountyGEOID 1712367691	township	246	256±99	$68,125	$78,200	1.6%	100%
La RoseGEOID 1742171	village	98	97±32	$41,875	$72,900	16.5%	100%
Washburn	village	1,032	945±180	$76,667	$89,100	7.5%	5%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Marshall County?

The median resident of Marshall County is 46.1 years old; 20.4% are under 18 and 24.0% are 65 or older. The largest group is non-Hispanic white residents at 92.1%, then non-Hispanic residents of two or more races at 3.7%. 1.1% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Marshall County	Illinois	Change since 2015-2019
Median age	46.1±0.4	39.0	no clear change
Under 18 years	20.4%	21.8%	–
65 years and over	24.0%±0.2 pts	17.0%	–
Hispanic or Latino (any race)	3.5%	18.8%	+0.5 pts
White alone, not Hispanic	92.1%±0.8 pts	58.1%	−2.4 pts
Black or African American alone, not Hispanic	0.4%±0.4 pts	13.3%	–
Asian alone, not Hispanic	0.1%±0.1 pts	5.9%	–
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	3.7%±0.9 pts	3.4%	–
Some other race alone, not Hispanic	0.1%±0.2 pts	0.4%	–
Born outside the United States	1.1%±0.4 pts	14.7%	no clear change
Speak a language other than English at home (age 5+)	2.9%±0.8 pts	24.0%	–
Civilian veterans (age 18+)	9.0%±1.3 pts	4.8%	–
With a disability	15.7%±1.4 pts	12.1%	–
No health insurance coverage	3.5%±0.8 pts	6.9%	no clear change
High school graduate or higher (age 25+)	91.5%±1.6 pts	90.5%	–
Bachelor's degree or higher (age 25+)	18.0%±2.0 pts	37.8%	no clear change
Graduate or professional degree (age 25+)	5.4%±1.1 pts	15.3%	–
Moved from another state in the past year	1.1%±0.5 pts	1.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Marshall County earn?

Half of Marshall County's 5,094 households earn less than $71,585 a year (±$3,594), against $83,390 in Illinois. In 2015-2019 it was $71,953 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.4% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Marshall County	Illinois	Change since 2015-2019
Median household income	$71,585±$3,594	$83,390	no clear change
Mean household income	$85,623±$4,401	$115,638	–
Per capita income	$37,407±$1,891	$46,406	no clear change
People below the poverty line	11.4%±1.8 pts	11.8%	no clear change
Children under 18 below the poverty line	14.8%±4.2 pts	15.1%	no clear change
Households receiving SNAP	13.5%±1.9 pts	13.8%	–
Households with a broadband subscription	85.6%±1.8 pts	90.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Marshall County?

Owners occupy 79.2% of Marshall County's occupied homes and renters 20.8%. The median owner-occupied home is valued at $142,800 by its owner (±$8,929). The median renter pays $782 a month including utilities, and 33.2% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Marshall County	Illinois	Change since 2015-2019
Median home value (owner-occupied)	$142,800±$8,929	$263,300	+$13,700
Median gross rent	$782±$84	$1,274	no clear change
Renters paying 35% or more of income on rent	33.2%±7.2 pts	39.0%	no clear change
Median monthly owner costs, with a mortgage	$1,298±$55	$1,987	–
Owner-occupied homes	79.2%±2.5 pts	67.1%	no clear change
Housing units	5,815±32	5,457,452	−104
Homeowner vacancy rate	1.8%±1.6 pts	1.0%	–
Rental vacancy rate	1.6%±2.0 pts	5.0%	–
Single-family detached homes	88.8%±2.0 pts	58.2%	–
Mobile homes	1.2%±0.5 pts	2.3%	–
Built 2020 or later	0.2%±0.2 pts	0.7%	–
Built 1939 or earlier	30.4%±2.6 pts	20.2%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Marshall County building?

Builders took permits for 3 new housing units across Marshall County in 2025 (3 single-family), 0.3 per 1,000 residents.

2019 35 units
2020 4 units
2021 4 units
2022 7 units
2023 8 units
2024 6 units
2025 3 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Marshall County get to work?

86.9% of Marshall County's workers drive alone and 6.6% work from home. The average trip to work takes 28.9 minutes. The unemployment rate in 2020-2024 averaged 3.8%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Marshall County	Illinois	Change since 2015-2019
In the labor force (age 16+)	56.2%±2.1 pts	65.0%	–
Unemployment rate	3.8%±1.2 pts	5.8%	no clear change
Drove alone to work	86.9%±1.8 pts	65.9%	–
Carpooled	4.4%±1.1 pts	7.8%	–
Public transportation	0.1%±0.1 pts	5.8%	–
Walked	1.3%±1.0 pts	2.8%	–
Worked from home	6.6%±1.4 pts	15.9%	+2.1 pts
Mean travel time to work	28.9 min±2.3	27.8 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Marshall County's census tracts?

Marshall County is divided into 5 census tracts. Among those with a reliable estimate, median household income runs from $64,632 (Tract 9612) to $74,511 (Tract 9613).

Census tracts of Marshall County, ACS 2020-2024 5-year estimates; sort by any column

Tract 961117123961100	Wenona (27%)	2,412	2,576±214	$73,547	$159,700	$861	9.8%
Tract 961217123961200	Henry (85%)	2,426	2,461±54	$64,632	$116,100	$681	14.6%
Tract 961317123961300	Sparland (9%)	2,092	1,919±146	$74,511	$155,100	$687	8.7%
Tract 961417123961400	Lacon (65%)	2,766	2,641±228	$71,434	$145,400	$838	11.9%
Tract 961517123961500	Toluca (39%)	2,046	2,050±173	$69,875	$136,500	$844	11.9%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Marshall County compare with Illinois's other counties?

Marshall County's rank among Illinois's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	85th of 102
Growth 2020-2025	56th of 102
Residents per square mile	73rd of 102
Median household income	39th of 102
Median home value	44th of 102
Median gross rent	70th of 102
Poverty rate	63rd of 102
Bachelor's degree or higher	83rd of 102
Median age	12th of 102

Every county in Illinois

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Marshall County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.