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.
High school graduate or higher, percent of persons age 25 years+, 2014-2018 - (Percent)
County
Value
Adair
94.2
Adams
94.1
Allamakee
87.7
Appanoose
90.9
Audubon
89.8
Benton
93.9
Black Hawk
91.3
Boone
94.3
Bremer
96.2
Buchanan
94.1
Buena Vista
77.8
Butler
92.7
Calhoun
94.0
Carroll
93.5
Cass
88.2
Cedar
94.9
Cerro Gordo
93.1
Cherokee
92.6
Chickasaw
92.3
Clarke
89.1
Clay
93.5
Clayton
91.2
Clinton
91.1
Crawford
77.8
Dallas
95.3
Davis
83.2
Decatur
88.7
Delaware
91.3
Des Moines
91.6
Dickinson
95.8
Dubuque
92.4
Emmet
90.5
Fayette
92.1
Floyd
89.3
Franklin
90.6
Fremont
92.5
Greene
93.7
Grundy
94.2
Guthrie
92.8
Hamilton
93.5
Hancock
93.4
Hardin
91.6
Harrison
91.8
Henry
92.9
Howard
90.3
Humboldt
92.2
Ida
93.5
Iowa
93.8
Jackson
92.3
Jasper
93.7
Jefferson
92.7
Johnson
95.3
Jones
91.7
Keokuk
92.5
Kossuth
94.4
Lee
92.2
Linn
94.7
Louisa
81.9
Lucas
92.8
Lyon
90.6
Madison
94.9
Mahaska
91.2
Marion
93.4
Marshall
83.6
Mills
93.4
Mitchell
89.9
Monona
92.4
Monroe
88.0
Montgomery
90.1
Muscatine
87.6
O'Brien
92.3
Osceola
89.1
Page
90.9
Palo Alto
93.5
Plymouth
93.0
Pocahontas
91.4
Polk
91.5
Pottawattamie
89.5
Poweshiek
93.0
Ringgold
92.3
Sac
92.6
Scott
92.9
Shelby
91.9
Sioux
90.8
Story
97.1
Tama
90.9
Taylor
90.2
Union
90.2
Van Buren
89.9
Wapello
87.9
Warren
95.7
Washington
91.1
Wayne
88.9
Webster
90.8
Winnebago
91.8
Winneshiek
94.7
Woodbury
86.7
Worth
92.8
Wright
91.8
Value for Iowa (Percent): 92.0%
Data item: High school graduate 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 errors. 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.
