About this application: This application provides summary profiles showing frequently requested data items from various US Census Bureau programs. Profiles are available for the nation, states, and counties.
Bachelor's degree or higher, percent of persons age 25 years+, 2014-2018 - (Percent)
County
Value
Adair
15.4
Adams
17.7
Allamakee
18.5
Appanoose
17.1
Audubon
14.6
Benton
22.6
Black Hawk
28.6
Boone
24.8
Bremer
30.3
Buchanan
20.6
Buena Vista
19.6
Butler
17.5
Calhoun
19.5
Carroll
22.2
Cass
19.6
Cedar
23.0
Cerro Gordo
22.7
Cherokee
21.4
Chickasaw
16.9
Clarke
16.9
Clay
22.6
Clayton
17.2
Clinton
19.1
Crawford
12.8
Dallas
49.4
Davis
20.5
Decatur
23.5
Delaware
16.6
Des Moines
20.5
Dickinson
31.3
Dubuque
30.5
Emmet
20.2
Fayette
19.8
Floyd
19.9
Franklin
17.7
Fremont
19.3
Greene
20.1
Grundy
28.0
Guthrie
19.8
Hamilton
24.3
Hancock
23.1
Hardin
19.8
Harrison
18.8
Henry
20.1
Howard
14.9
Humboldt
20.8
Ida
19.0
Iowa
19.1
Jackson
18.8
Jasper
17.9
Jefferson
31.6
Johnson
53.0
Jones
18.4
Keokuk
18.2
Kossuth
18.3
Lee
15.7
Linn
33.0
Louisa
14.2
Lucas
17.0
Lyon
21.4
Madison
23.9
Mahaska
22.3
Marion
26.4
Marshall
19.0
Mills
23.7
Mitchell
17.7
Monona
16.7
Monroe
16.6
Montgomery
17.5
Muscatine
22.0
O'Brien
19.9
Osceola
18.1
Page
21.3
Palo Alto
25.0
Plymouth
21.0
Pocahontas
14.7
Polk
36.1
Pottawattamie
21.2
Poweshiek
25.1
Ringgold
20.6
Sac
20.6
Scott
31.9
Shelby
20.8
Sioux
28.1
Story
51.1
Tama
16.1
Taylor
14.9
Union
17.2
Van Buren
14.1
Wapello
18.0
Warren
31.7
Washington
21.5
Wayne
13.0
Webster
19.6
Winnebago
22.4
Winneshiek
29.7
Woodbury
23.0
Worth
15.5
Wright
17.7
Value for Iowa (Percent): 28.2%
Data item: Bachelor's degree or higher, percent of persons age 25 years+, 2014-2018
Sources: U.S. Census Bureau, American Community Survey (ACS) and Puerto Rico Community Survey (PRCS), 5-Year Estimates. The PRCS is part of the Census Bureau's ACS, customized for Puerto Rico. Both Surveys are updated every year.
Definition
High School Graduates include people whose highest degree was a high school diploma or its equivalent, people who attended college but did not receive a degree, and people who received an associate's, bachelor's, master's, or professional or doctorate degree. People who reported completing the 12th grade but not receiving a diploma are not included. Persons with a Bachelor's Degree or Higher are those who have received a bachelor's degree from a college or university, or a master's, professional, or doctorate degree. For the complete definition, go to ACS subject definitions "Educational Attainment."
These data include only persons 25 years old and over. The percentages are obtained by dividing the counts of graduates by the total number of persons 25 years old and over.
Source and Accuracy
This Fact is based on data collected in the American Community Survey (ACS) and the Puerto Rico Community Survey (PRCS) conducted annually by the U.S. Census Bureau. A sample of over 3.5 million housing unit addresses is interviewed each year over a 12 month period. This Fact (estimate) is based on five years of ACS and PRCS sample data and describes the average value of person, household and housing unit characteristics over this period of collection.
Statistics from all surveys are subject to sampling and nonsampling error. Sampling error is the uncertainty between an estimate based on a sample and the corresponding value that would be obtained if the estimate were based on the entire population (as from a census). Measures of sampling error are provided in the form of margins of error for all estimates included with ACS and PRCS published products. The Census Bureau recommends that data users incorporate this information into their analyses, as sampling error in survey estimates could impact the conclusions drawn from the results. The data for each geographic area are presented together with margins of error at Using margins of error. A more detailed explanation of margins of error and a demonstration of how to use them is provided below.
For more information on sampling and estimation methodology, confidentiality, and sampling and nonsampling errors, please see the Multiyear Accuracy (US) and the Multiyear Accuracy (Puerto Rico) documents at "Documentation - Accuracy of the data."
Margin of Error
As mentioned above, ACS estimates are based on a sample and are subject to sampling error. The margin of error measures the degree of uncertainty caused by sampling error. The margin of error is used with an ACS estimate to construct a confidence interval about the estimate. The interval is formed by adding the margin of error to the estimate (the upper bound) and subtracting the margin of error from the estimate (the lower bound). It is expected with 90 percent confidence that the interval will contain the full population value of the estimate. The following example is for demonstrating purposes only. Suppose the ACS reported that the percentage of people in a state who were 25 years and older with a bachelor's degree was 21.3 percent and that the margin of error associated with this estimate was 0.7 percent. By adding and subtracting the margin of error from the estimate, we calculate the 90-percent confidence interval for this estimate:
Therefore, we can be 90 percent confident that the percent of the population 25 years and older having a bachelor's degree in a state falls somewhere between 20.6 percent and 22.0 percent.
