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Duncan township, Mercer County, IL

255 Population
36.6 square miles 7 people per square mile

Census data: ACS 2023 5-year unless noted

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Demographics

48.8 ±34.2 Median age
  • about 10 percent higher than the figure in Mercer County: 44.5 ±0.3
  • about 25 percent higher than the figure in Illinois: 38.9 ±0.1

Economics

$36,672 ±$8,932 Per capita income
  • about the same as the amount in Mercer County: $36,295 ±$1,506
  • about 80 percent of the amount in Illinois: $45,104 ±$196
$90,357 ±$12,274 Median household income
  • about 25 percent higher than the amount in Mercer County: $71,710 ±$3,328
  • about 10 percent higher than the amount in Illinois: $81,702 ±$363

7.8% ±9.6% (20  ±26) Persons below poverty line
  • about the same as the rate in Mercer County: 7.9% † 1,217 (±1.8% / ±279)
  • about two-thirds of the rate in Illinois: 11.7% 1,454,217 (±0.2% / ±18,530)

27.2 minutes ±22 (2,175  ±1,138) Mean travel time to work
  • a little less than the figure in Mercer County: 28.5 190,605 (±1.7 / ±14,591)
  • a little less than the figure in Illinois: 28.1 148,440,910 (±0.1 / ±701,124)

Families

112 ±42 Number of households
  • Mercer County: 6,413 ±217
  • Illinois: 5,001,904 ±7,673
2.3 ±0.6 (255  ±114) Persons per household
  • a little less than the figure in Mercer County: 2.4 15,455 (±0.1 / ±10)
  • about 90 percent of the figure in Illinois: 2.5 12,414,044

N/A Women 15-50 who gave birth during past year

Housing

112 ±42 Number of housing units
  • Mercer County: 7,279 ±42
  • Illinois: 5,443,501 ±767

$220,300 ±$51,074 Median value of owner-occupied housing units
  • about 1.5 times the amount in Mercer County: $139,300 ±$8,449
  • about 90 percent of the amount in Illinois: $250,500 ±$863

N/A Moved since previous year

Social

90.8% ±10.6% (177  ±69.4) High school grad or higher
  • a little less than the rate in Mercer County: 93.3% 10,406 (±3.8% / ±431.1)
  • about the same as the rate in Illinois: 90.3% 7,887,284 (±0.3% / ±22,684.6)
16.4% ±20.1% (32  ±40.9) Bachelor's degree or higher
  • about 90 percent of the rate in Mercer County: 18.9% † 2,111 (±2.1% / ±230.5)
  • about two-fifths of the rate in Illinois: 37.2% 3,249,494 (±0.2% / ±13,788.4)

N/A Persons with language other than English spoken at home

N/A Foreign-born population

14.9% ±11% (29  ±24) Population with veteran status
  • more than 1.5 times the rate in Mercer County: 8.7% † 1,072 (±1% / ±126)
  • more than double the rate in Illinois: 5% 493,667 (±0.1% / ±4,919)
29 Total veterans ±24 29 Male ±24 N/A Female ±12

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