Montgomery County, Illinois Population 2021

Montgomery County, Illinois's estimated population is 27,860 with a growth rate of -0.98% in the past year according to the most recent United States census data. Montgomery County, Illinois is the 51st largest county in Illinois. The 2010 Population was 30,097 and has seen a growth of -7.43% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202127,860-277-0.98%
202028,137-277-0.97%
201928,414-277-0.97%
201828,691-90-0.31%
201728,781-280-0.96%
201629,061-131-0.45%
201529,192-257-0.87%
201429,449870.30%
201329,362-254-0.86%
201229,616-248-0.83%
201129,864-233-0.77%
201030,097-631-2.05%
199030,728-958-3.02%
198031,6861,4264.71%
197030,260-984-3.15%
196031,244-1,216-3.75%
195032,460-2,039-5.91%
194034,499-779-2.21%
193035,278-6,125-14.79%
192041,4036,09217.25%
191035,3114,47514.51%
190030,8368332.78%
189030,0031,9256.86%
188028,0782,76410.92%
187025,31411,33581.09%
186013,9797,702122.70%
18506,2771,78739.80%
18404,4901,53752.05%
18302,9530.00%
2021 Growth Rate
-0.98%
County Website
Founded
1821
County Seat
2010 Population
30,097
Growth Since 2010
-7.43%
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Montgomery County, Illinois Population Growth

Population by Race

Race Population Percentage
White27,26594.58%
Black or African American1,0783.74%
Two or More Races2690.93%
Some Other Race770.27%
Asian750.26%
American Indian and Alaska Native500.17%
Native Hawaiian and Other Pacific Islander140.05%
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Montgomery County, Illinois Population by Race

Montgomery County, Illinois Population Pyramid $2021

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Montgomery County, Illinois Median Age

43.3


Total

40.9


Male

46.4


Female

Montgomery County, Illinois Adults

There are 23,052 adults, (5,655 of whom are seniors) in Montgomery County, Illinois.

Montgomery County, Illinois Age Dependency

65.7

Age Dependency Ratio

32.5

Old Age Dependency Ratio

33.2

Child Dependency Ratio

Montgomery County, Illinois Sex Ratio

Female

13,694

47.50%

Male

15,134

52.50%

Montgomery County, Illinois Population by Age

Montgomery County, Illinois Renter vs Owner Occupied by Household Type

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Montgomery County, Illinois Household Types

Type Owner Renter
Married87.8%12.2%
All76.4%23.6%
Non Family67.6%32.4%
Male64.3%35.7%
Female56.8%43.2%

76.4%

Rate of Home Ownership

Montgomery County, Illinois Households and Families

Type Count Average Size Owned
All11,5222.2476.4
Married5,7002.7887.8
Non Family4,0541.1467.6
Female1,1372.8856.8
Male6313.3364.3

2.77

Average Family Size

2.24

Average Household Size

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Montgomery County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade5122.44%
9th to 12th Grade2,0699.87%
High School Graduate8,23739.31%
Some College4,63522.12%
Associates Degree2,0029.55%
Bachelors Degree2,16410.33%
Graduate Degree1,3346.37%
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Montgomery County, Illinois Educational Attainment by Sex (over 25)

Montgomery County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White19,42217,3823,421
Black952533
Hispanic3292154
2+ Races12712327
Asian656536
Other Race5235
Native American5046
Islander141414

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 100.00%.

Montgomery County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$34,344$40,383$29,230
Less Than 9th Grade$21,813$25,682$18,672
High School Graduate$30,913$37,590$24,330
Some College$33,255$44,085$24,851
Bachelors Degree$47,193$53,625$45,028
Graduate Degree$53,601$54,464$53,429

$34,344

Average Earnings

$40,383

Average Male

$29,230

Average Female

Montgomery County, Illinois Earnings by Educational Attainment

Montgomery County, Illinois Language by Age

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Montgomery County, Illinois Language

97.99% of Montgomery County, Illinois residents speak only English, while 2.01% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.10% of the population.

Montgomery County, Illinois Language

Montgomery County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White25,1374,09116.27%
Hispanic2808831.43%
Multiple2637628.90%
Black723548.61%
Asian751013.33%

16.58%

Overall Poverty Rate

14.84%

Male Poverty Rate

18.19%

Female Poverty Rate

Poverty in Montgomery County, Illinois

The race most likely to be in poverty in Montgomery County, Illinois is Black, with 48.61% below the poverty level.

The race least likely to be in poverty in Montgomery County, Illinois is Asian, with 13.33% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.50%. Among those working part-time, it was 15.10%, and for those that did not work, the poverty rate was 20.99%.

Montgomery County, Illinois Poverty

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Name Poverty
Less Than 9th Grade32.67%
High School12.84%
Some College9.00%
Bachelors or Greater5.89%

Montgomery County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed49.64%
Male Unemployed28.62%
Female Employed7.85%
Male Employed6.97%

Montgomery County, Illinois Poverty Rate by Employment Status and Sex

Montgomery County, Illinois Income by Household Type

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Name Median Mean
Households$52,748$65,721
Families$66,823$78,541
Married Families$76,934$90,301
Non Families$26,240$40,382
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Income by Household Type

Montgomery County, Illinois Marital Status

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Marriage Rates

50.4%

Overall Marriage Rate

48.1%

Male Marriage Rate

52.9%

Female Marriage Rate

Montgomery County, Illinois Married by Age and Sex

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Montgomery County, Illinois Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Montgomery County, Illinois Marital Status by Race

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Montgomery County, Illinois Marital Status

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2,202

Number of Veterans

2,082

Male Veterans

120

Female Veterans

War Veterans
Vietnam841
First Gulf War348
Second Gulf War222
Korea176
World War II111

Montgomery County, Illinois Veterans by War

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Age Group Veterans
65 to 74680
75+590
35 to 54461
55 to 64369
18 to 34102

Montgomery County, Illinois Veterans by Age

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Name Veterans % of Total
White2,1259.81%
Black434.13%
2+ Races2721.09%
Hispanic225.84%
Native American48.00%
Other Race33.90%

Montgomery County, Illinois Veterans by Race

Montgomery County, Illinois Veterans by Education

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6.35%

Veteran Poverty Rate

29.90%

Veteran Disability Rate

Montgomery County, Illinois Veterans by Education

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51%

Labor Force Participation

48.7%

Employment Rate

4.6%

Unemployment Rate

Montgomery County, Illinois Employment by Age

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Montgomery County, Illinois Employment by Race

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Montgomery County, Illinois Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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83.10%

Born in Montgomery County, Illinois

98.84%

Native Born

1.16%

Foreign Born

0.41%

Non Citizen

0.75%

Naturalized

Place of Birth

98.84% of Montgomery County, Illinois residents were born in the United States, with 83.10% having been born in Illinois. 0.41% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Montgomery County, Illinois Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources