Rock Island County, Illinois Population 2018

Rock Island County, Illinois's estimated population is 144,808 with a growth rate of -0.46% 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
2017146,2051,3970.96%
2017144,808-664-0.46%
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
White119,259
Black or African American14,573
Two or More Races5,189
Asian3,517
Some Other Race3,131
American Indian and Alaska Native483
Native Hawaiian and Other Pacific Islander53

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Rock Island County, Illinois Population Pyramid 2018

1,0002,0003,0004,0005,000 Male Population1,0002,0003,0004,0005,000 Female Population80757065605550454035302520151050

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Rock Island County, Illinois Median Age

40


Total

38.6


Male

41.7


Female

Rock Island County, Illinois Adults

There are 113,392 adults, (26,174 of whom are seniors) in Rock Island County, Illinois.

Rock Island County, Illinois Age Dependency

67.6

Age Dependency Ratio

30

Old Age Dependency Ratio

37.6

Child Dependency Ratio

Rock Island County, Illinois Sex Ratio

Female

74,152

50.72%

Male

72,053

49.28%

Rock Island County, Illinois Households and Families

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

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Rock Island County, Illinois Household Types

Type Owner Renter
Married85.2%14.8%
All69%31%
Male65.1%34.9%
Non Family57.1%42.9%
Female48.8%51.2%

69.0%

Rate of Home Ownership

Rock Island County, Illinois Households by Type

Type Count Average Size Owned
All60,0642.3569
Married26,8542.9785.2
Non Family22,3801.1557.1
Female7,8363.348.8
Male2,9943.3265.1

2.97

Average Family Size

2.35

Average Household Size

5.8%

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 Grade3,7493.74%
9th to 12th Grade7,5107.48%
High School Graduate30,88630.78%
Some College25,60125.51%
Associates Degree9,8039.77%
Bachelors Degree14,91814.87%
Graduate Degree7,8807.85%

Rock Island County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White79,01072,84819,053
Hispanic9,5436,6481,185
Black8,3856,7261,238
Asian2,1581,6401,094
Other Race1,8161,188273
Multiple Races1,6301,393291
Native American37431866
Islander352917

The highest rate of high school graduation is among white people with a rate of 92.20%.

The highest rate of bachelors degrees is among white people with a rate of 50.70%.

Rock Island County, Illinois Earnings by Educational Attainment

Name Average Male Female
Overall$34,470$41,421$28,118
Less Than High School$24,467$27,161$17,724
High School Grad$28,249$34,440$21,278
Some College$32,986$41,276$26,974
Bachelors Degree$46,269$55,470$38,545
Graduate Degree$61,918$67,781$59,375

$34,470

Average Earnings

$41,421

Average Male

$28,118

Average Female

Rock Island County, Illinois Language

Rock Island County, Illinois Language by Age

Rock Island County, Illinois Language

86.97% of Rock Island County, Illinois residents speak only English, while 13.03% speak other languages. The largest non-English language is Spanish, which is spoken by 7.99% of the population.

Rock Island County, Illinois Poverty

Rock Island County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White102,74411,67211.36%
Black13,5784,14630.53%
Hispanic17,8673,11717.45%
Multiple5,0251,26025.07%
Asian3,38469020.39%
Other3,12354717.52%
Native48314630.23%
Islander512549.02%

14.60%

Overall Poverty Rate

12.75%

Male Poverty Rate

16.38%

Female Poverty Rate

Poverty in Rock Island County, Illinois

The race most likely to be in poverty in Rock Island County, Illinois is Islander, with 49.02% below the poverty level.

The race least likely to be in poverty in Rock Island County, Illinois is White, with 11.36% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.35%. Among those working part-time, it was 17.40%, and for those that did not work, the poverty rate was 20.74%.

Rock Island County, Illinois Poverty Rate by Education

Name Poverty
Less Than High School23.17%
High School12.69%
Some College10.97%
Bachelors or Greater4.02%

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

Name Poverty
Female Unemployed37.55%
Male Unemployed29.79%
Female Employed9.15%
Male Employed4.80%

Rock Island County, Illinois Income

Rock Island County, Illinois Income by Household Type

Name Median Mean
Households$51,426$66,215
Families$64,696$79,889
Married Families$77,782$93,459
Non Families$30,966$40,333

Rock Island County, Illinois Marital Status

Rock Island County, Illinois Marital Status

Marriage Rates

47.8%

Overall Marriage Rate

49.7%

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 55To64.

Rock Island County, Illinois Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Rock Island County, Illinois Veterans

Rock Island County, Illinois Veterans by War

10,078

Number of Veterans

9,366

Male Veterans

712

Female Veterans

Name Veterans
Vietnam3,805
First Gulf War1,494
Second Gulf War1,432
Korea979
World War II517

Rock Island County, Illinois Veterans by Age

Name Veterans
65 to 742,808
75+2,446
35 to 541,977
55 to 641,822
18 to 341,025

Rock Island County, Illinois Veterans by Race

Name Veterans % of Total
White9,1799.57%
Black6396.33%
Hispanic4263.64%
2 or More1215.41%
Other562.61%
Indian4511.66%
Asian381.53%

Rock Island County, Illinois Veterans by Education

7.97%

Veteran Poverty Rate

26.29%

Veteran Disability Rate

Rock Island County, Illinois Employment Status

Rock Island County, Illinois Employment by Age

63%

Labor Force Participation

58.5%

Employment Rate

7.1%

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