Cost of Housing + Transportation as % of Income
3.8%
Rank: 6th of 9 counties
% of income spent on housing (typical)
28%
28%
% of income spent on transportation (typical)
22%
22%
% of income spent on housing (moderate)
35%
35%
% of income spent on transportation (moderate)
25%
25%
estimated # in household
2.47
2.47
estimated # of vehicles per household
1.9
1.9
Why do we measure this? The cost of housing, defined as rent or mortgage plus basic required utilities and mandatory fees, is the single largest expense for most households. However, transportation is also a large expense for most households. These costs can sometimes (but not always) be inversely related: workers often have a choice to spend less on housing located further away from jobs and amenities and then spend a greater percentage of their income on transportation than they would if they had housing that was closer to work, school, and shopping areas. The cost of transportation, which include costs related to vehicle ownership and use as well as public transit usage costs, is an important factor that people have to consider when choosing a place to live.
What are some limitations of this metric's source? While much of the data used for this index originated from public sources, the methodology lacks transparency. The appropriate way to use this index is for examining general trends in different locations. Actual households may spend more or less on housing and transportation based on a number of factors such as income, number of workers in the home, transportation and transit options and place of employment or flexibility in working arrangements. Additionally, CNT is a transportation research firm focused on sustainability in urban areas, which does include promoting transit development. The data used to develop this index lags by approximately 2 years before the current index year.
Also, while housing and transportation are necessities, individual decisions about them are made with quality of life factors in mind. Housing needs vary with the size of households and considerations about the mobility or disability status of household members. Transportation needs also vary by household, and this will impact the number and types of vehicles and the percentage of trips that require people to use vehicles or transit.
How else can this be measured? U.S. Department of Housing and Urban Development's Location Affordability Index. We did not use this for two reasons: 1) because the data used to support it lags 5 to 6 years behind the current index year and 2) because HUD no longer supports the data portal that allows visualization of the data or re-calculation of the model at the county level. The U.S. Census Bureau American Community Survey includes statistics on the percent of income spent on housing, but does not address total cost of transportation.
Why did we use this source? This is an aggregate index that considers the interplay between the costs of housing and transportation. Below we show U.S. Census Bureau stats on housing cost burden. When households pay more than 30% of their income toward required housing costs, they are generally considered to be "cost burdened", as less of their income is now available for transportation, food, child care, health care, savings and other neccessities.
Census data differentiates between homeowners and renters, and this classifcation highlights one of the challenges of moving between renting and homeownership: more renters are cost-burdened. This raises the question of can cost burdened renters save enough to purchase a home?
Also, while housing and transportation are necessities, individual decisions about them are made with quality of life factors in mind. Housing needs vary with the size of households and considerations about the mobility or disability status of household members. Transportation needs also vary by household, and this will impact the number and types of vehicles and the percentage of trips that require people to use vehicles or transit.
How else can this be measured? U.S. Department of Housing and Urban Development's Location Affordability Index. We did not use this for two reasons: 1) because the data used to support it lags 5 to 6 years behind the current index year and 2) because HUD no longer supports the data portal that allows visualization of the data or re-calculation of the model at the county level. The U.S. Census Bureau American Community Survey includes statistics on the percent of income spent on housing, but does not address total cost of transportation.
Why did we use this source? This is an aggregate index that considers the interplay between the costs of housing and transportation. Below we show U.S. Census Bureau stats on housing cost burden. When households pay more than 30% of their income toward required housing costs, they are generally considered to be "cost burdened", as less of their income is now available for transportation, food, child care, health care, savings and other neccessities.
Census data differentiates between homeowners and renters, and this classifcation highlights one of the challenges of moving between renting and homeownership: more renters are cost-burdened. This raises the question of can cost burdened renters save enough to purchase a home?
Data Sources used for this metric
- Center for Neighborhood Technology (CNT) H+ T (Housing and Transportation) Affordability Index
Additional Information and other data sources
- U.S. Bureau of Housing and Urban Development (HUD) Location Affordability Index (LAI) Download a spreadsheet or GIS file of their index
- "People in Transit-Rich Neighborhoods Don't Spend Less on Transportation" Citylab. April 2018. A discussion of a study that highlights the importance of factoring in real families when thinking about the real cost of transportation.
- U.S. Census Bureau Factfinder See table B25016 for housing cost statistics.