Rock Island County, Illinois Population 2018

Rock Island County, Illinois's estimated population is 144,808 with a growth rate of -1.18% in the past year according to the most recent United States census data. Rock Island County, Illinois is the 14th largest county in Illinois.

Year Population Growth Growth Rate
2017144,808-1,728-1.18%
2016146,5361,0640.73%
2016145,472-777-0.53%
2015146,249-716-0.49%
2014146,965-565-0.38%
2013147,530-59-0.04%
2012147,5891970.13%
2011147,392-225-0.15%
2010147,617-1,106-0.74%
1990148,723-17,245-10.39%
1980165,968-766-0.46%
1970166,73415,74310.43%
1960150,99117,43313.05%
1950133,55820,23517.86%
1940113,32315,13215.41%
193098,1915,8946.39%
192092,29721,89331.10%
191070,40415,15527.43%
190055,24913,33231.81%
189041,9173,6159.44%
188038,3028,51928.60%
187029,7838,77841.79%
186021,00514,068202.80%
18506,9374,327165.79%
18402,6100.00%

Rock Island County, Illinois Population Growth

Population Data via

Population by Race

Race Population
White120,109
Black or African American14,066
Two or More Races5,162
Some Other Race3,404
Asian3,320
American Indian and Alaska Native431
Native Hawaiian and Other Pacific Islander44

Race Data via US Census (2016 ACS 5-Year Survey)

Rock Island County, Illinois Population Pyramid 2018

0%2%4%6%8% Male Population0%2%4%6%8% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Rock Island County, Illinois Median Age

40.1


Total

38.6


Male

41.7


Female

Rock Island County, Illinois Adults

There are 113,712 adults, (25,644 of which are seniors) in Rock Island County, Illinois.

Rock Island County, Illinois Age Dependency

66.5

Age Dependency Ratio

29.2

Old Age Dependency Ratio

37.3

Child Dependency Ratio

Rock Island County, Illinois Sex Ratio

Female

74,406

50.78%

Male

72,130

49.22%

Rock Island County, Illinois Households and Families

Rock Island County, Illinois Renter vs Owner Occupied by Household Type

Rock Island County, Illinois Household Types

Type Owner Renter
Married85.2%14.8%
All69.1%30.9%
Male66.2%33.8%
Non Family57%43%
Female49.6%50.4%

69.1%

Rate of Home Ownership

Rock Island County, Illinois Households by Type

Type Count Average Size Owned
All60,0982.3669.1
Married26,9062.9985.2
Non Family22,6311.1657
Female7,7893.3549.6
Male2,7723.2866.2

2.99

Average Family Size

2.36

Average Household Size

6%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Rock Island County, Illinois Households

Rock Island County, Illinois Education

Rock Island County, Illinois Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade3,8823.86%
9th to 12th Grade7,5517.51%
High School Graduate31,32231.15%
Some College25,98925.85%
Associates Degree9,6359.58%
Bachelors Degree14,64214.56%
Graduate Degree7,5187.48%

Rock Island County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White79,69173,11918,628
Hispanic9,3676,4731,049
Black8,2166,7971,206
Asian2,1071,6121,021
Other Race2,0251,345257
Multiple Races1,5761,318281
Native American30729171
Islander383228

The highest rate of high school graduation is among native american people with a rate of 94.79%.

The highest rate of bachelors degrees is among native american people with a rate of 73.68%.

Rock Island County, Illinois Earnings by Educational Attainment

Name Average Male Female
Overall$33,547$41,023$27,060
Less Than High School$22,241$28,152$16,360
High School Grad$27,255$33,869$20,705
Some College$33,012$41,760$26,715
Bachelors Degree$44,116$53,592$37,606
Graduate Degree$62,083$73,056$57,231

$33,547

Average Earnings

$41,023

Average Male

$27,060

Average Female

Rock Island County, Illinois Language

Rock Island County, Illinois Language by Age

Rock Island County, Illinois Language

87.10% of Rock Island County, Illinois residents speak only English, while 12.90% speak other languages. The largest non-English language is Spanish, which is spoken by 7.79% of the population.

Rock Island County, Illinois Poverty

Rock Island County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White104,08812,01911.55%
Black13,1334,32732.95%
Hispanic17,6673,22318.24%
Multiple4,9851,34026.88%
Asian3,23968121.03%
Other3,39157817.05%
Native43115335.50%
Islander44613.64%

15.10%

Overall Poverty Rate

13.27%

Male Poverty Rate

16.85%

Female Poverty Rate

Poverty in Rock Island County, Illinois

The race most likely to be in poverty in Rock Island County, Illinois is Native, with 35.50% below the poverty level.

The race least likely to be in poverty in Rock Island County, Illinois is White, with 11.55% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.46%. Among those working part-time, it was 17.99%, and for those that did not work, the poverty rate was 20.45%.

Rock Island County, Illinois Poverty Rate by Education

Name Poverty
Less Than High School23.49%
High School12.54%
Some College10.86%
Bachelors or Greater3.93%

Rock Island County, Illinois Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed39.83%
Male Unemployed29.59%
Female Employed9.20%
Male Employed4.94%

Rock Island County, Illinois Income

Rock Island County, Illinois Income by Household Type

Name Median Mean
Households$50,208$63,937
Families$62,197$76,480
Married Families$75,227$89,585
Non Families$30,284$40,312

Rock Island County, Illinois Marital Status

Rock Island County, Illinois Marital Status

Marriage Rates

48.0%

Overall Marriage Rate

50.0%

Male Marriage Rate

46.0%

Female Marriage Rate

Rock Island County, Illinois Married by Age and Sex

Rock Island County, Illinois Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 35To44.

Rock Island County, Illinois Marital Status by Race

Rock Island County, Illinois Veterans

Rock Island County, Illinois Veterans by War

10,507

Number of Veterans

9,811

Male Veterans

696

Female Veterans

Name Veterans
Vietnam3,880
Second Gulf War1,429
First Gulf War1,410
Korea1,091
World War II673

Rock Island County, Illinois Veterans by Age

Name Veterans
65 to 742,666
75+2,512
55 to 642,165
35 to 542,022
18 to 341,142

Rock Island County, Illinois Veterans by Race

Name Veterans % of Total
White9,66410.02%
Black6436.49%
Hispanic4233.70%
2 or More753.42%
Other512.13%
Indian4614.47%
Asian281.18%

Rock Island County, Illinois Veterans by Education

6.99%

Veteran Poverty Rate

26.02%

Veteran Disability Rate

Rock Island County, Illinois Employment Status

Rock Island County, Illinois Employment by Age

63.2%

Labor Force Participation

58.2%

Employment Rate

7.7%

Unemployment Rate

Rock Island County, Illinois Employment by Race

Rock Island County, Illinois Employment by Education

Population of Cities in Rock Island County, Illinois

City 2010 Census 2016 Estimated Growth Growth Rate
Moline4348142250-1231-2.83%
Rock Island3900538210-795-2.04%
East Moline2130721135-172-0.81%
Silvis75207586660.88%
Milan51605038-122-2.36%
Coal Valley 3719372120.05%
Carbon Cliff20872014-73-3.50%
Hamn18631819-44-2.36%
Port Byron16471637-10-0.61%
Andalusia11781177-1-0.08%
Rapids City95996010.10%
Cordova672651-21-3.13%
Oak Grove595567-28-4.71%
Reynolds 539512-27-5.01%
Hillsdale517505-12-2.32%
Data Sources
  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