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.
Mean travel time to work (minutes), workers age 16 years+, 2014-2018 - (Minutes)
County
Value
Anderson
23.8
Bedford
24.0
Benton
23.3
Bledsoe
32.3
Blount
24.7
Bradley
21.1
Campbell
28.7
Cannon
32.2
Carroll
24.7
Carter
23.8
Cheatham
32.7
Chester
26.0
Claiborne
24.4
Clay
29.1
Cocke
27.8
Coffee
23.6
Crockett
24.0
Cumberland
22.5
Davidson
24.6
Decatur
25.9
DeKalb
28.5
Dickson
32.8
Dyer
19.9
Fayette
32.9
Fentress
24.6
Franklin
23.4
Gibson
23.2
Giles
26.4
Grainger
33.1
Greene
22.4
Grundy
29.1
Hamblen
21.5
Hamilton
21.7
Hancock
31.6
Hardeman
28.8
Hardin
24.9
Hawkins
25.9
Haywood
23.9
Henderson
27.2
Henry
20.0
Hickman
36.2
Houston
33.8
Humphreys
29.5
Jackson
33.2
Jefferson
26.5
Johnson
24.8
Knox
22.1
Lake
18.7
Lauderdale
25.2
Lawrence
27.3
Lewis
24.5
Lincoln
28.0
Loudon
22.7
Macon
33.2
Madison
18.7
Marion
28.7
Marshall
30.9
Maury
29.2
McMinn
23.0
McNairy
26.6
Meigs
30.8
Monroe
28.1
Montgomery
25.3
Moore
28.4
Morgan
30.0
Obion
21.7
Overton
26.6
Perry
27.5
Pickett
25.7
Polk
28.3
Putnam
22.6
Rhea
22.7
Roane
28.5
Robertson
29.6
Rutherford
28.8
Scott
28.5
Sequatchie
32.4
Sevier
25.5
Shelby
22.8
Smith
29.5
Stewart
31.9
Sullivan
21.1
Sumner
28.4
Tipton
32.7
Trousdale
31.3
Unicoi
21.3
Union
33.2
Van Buren
28.5
Warren
24.2
Washington
20.4
Wayne
30.3
Weakley
20.3
White
24.0
Williamson
27.7
Wilson
30.9
Value for Tennessee (Minutes): 25.0
Data item: Mean travel time to work (minutes), workers age 16 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
Travel time to work refers to the total number of minutes that it usually took the person to get from home to work each day during the reference week. The elapsed time includes time spent waiting for public transportation, picking up passengers in carpools, and time spent in other activities related to getting to work.
Mean travel time to work is obtained by dividing the total number of minutes by the number of workers 16 years old and over who did not work at home. Mean travel time to work is rounded to the nearest tenth of a minute. For the complete definition, go to ACS subject definitions "Travel Time to Work."
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.
