Data Source
The primary data source for estimates presented in this tool is the U.S. Census Bureau’s
American Community Survey (ACS) Public Use Microdata Sample (PUMS), accessed via the Minnesota
Population Center IPUMS-USA database (IPUMS-USA, University of Minnesota, www.ipums.org).
For areas with 200,000 or more renter households, single-year ACS PUMS files (2011, 2018) were used
to generate estimates. For those areas with fewer than 200,000 renter households, the five-year ACS
PUMS files were used (2007–2011, 2014–2018). See Methodology
for
details.
Contact
Please address any questions or comments about this data tool to Anna Tranfaglia (Anna.Tranfaglia@phil.frb.org).
Calculations and Definitions
Affordability and Availability of Rental Housing
Renter income category
Calculated for renter households based on the relationship of the household’s income to the
regional median family income (MFI):
- Extremely low-income (ELI): A renter household for which household income was ≤30
percent of the regional MFI. Households reporting zero or negative income that paid more than
the Fair Market Rent 1 for
their unit during the survey year were reclassified as “not lower-income.”
- Very low-income (VLI): A renter household for which household income was >30
percent
and ≤50 percent of the regional MFI.
- Low-income (LI): A renter household for which household income was >50 percent and
≤80 percent of the regional MFI.
- Lower-income: A renter household for which income was ≤80 percent of the regional
MFI; this term is inclusive of ELI, VLI, and LI renter households.
Gross rent
Contract rent plus tenant-paid utilities such as electricity, gas, water, sewer, and fuel for
heating the home.2
Cost burden
Calculated as the share of renter households for which gross rent was >30 percent of the monthly
household income.
Severe cost burden
Calculated as the share of renter households for which gross rent was >50 percent of the monthly
household income.
Median rent gap
The rent gap is calculated as the difference between a cost-burdened household’s maximum
affordable rent (30 percent of the monthly household income) and their reported gross rent. Median
rent gaps are calculated based on all cost-burdened households in each income category.
Surplus/deficit of affordable and available rental units
A unit is considered affordable if gross rent did not exceed 30 percent of the monthly household
income at the given income threshold, adjusted for number of rooms (see Methodology
for
details). A unit is available if it is either vacant or currently occupied by a household at or
below the given income threshold. The surplus/deficit is calculated as the total number of rental
units that were affordable and available at a given income level minus the total number of renter
households at or below that corresponding income level.
Affordable and available units per 100 renter households
Calculated as the number of rental units that were affordable and available to households at or
below a given income threshold per 100 households at or below that income level.
Vacant rental units by affordability category
Calculated as the share of total vacant units that were affordable to renters in each income
category.
Demographic Profile of Cost-Burdened Renters
Cost-burdened, lower-income household
A renter household for which income was ≤80 percent of the regional MFI and gross rent was >30
percent of monthly income.
Race/ethnicity
Calculated as the share of all individuals in cost-burdened, lower-income households in
racial/ethnic categories. Race categories exclude those who identified their ethnicity as Hispanic;
the Hispanic category includes individuals of any race; and the Other category includes
non-Hispanic individuals identifying with another race or two or more races.
Age
Calculated as the share of all individuals in cost-burdened, lower-income households that falls
within each age category. Unrounded percentages sum to 100.
Household type
Calculated as the share of all cost-burdened, lower-income households that falls within each
household type category. The Unknown category includes renter households for which the type could
not be determined. Unrounded percentages sum to 100.
Share of households cost-burdened, selected vulnerable subgroups
Calculated as the share of all renter households in selected vulnerable groups for which gross rent
was >30 percent of monthly household income:
- Resident with a disability: Individual reporting a cognitive, ambulatory, independent
living, self-care, vision, or hearing difficulty
- Single-parent household: A family household with one child or more in which the
householder’s spouse was not present
- Senior-headed: Householder or spouse/partner 60 years of age or older
- Grandparent responsible for grandchildren: Grandparent responsible for most of the
basic needs of any grandchildren under the age of 18 living in the same housing unit
Economic Profile of Cost-Burdened Renters
Working-age
Individual 18 to 65 years old; not enrolled in school.
Number of employed persons
Calculated as the number of individuals in cost-burdened, lower-income households who reported being
employed at time of survey. Includes those employed part time.
Current employment status
Calculated as the share of working-age adults in cost-burdened, lower-income households by
employment status at time of survey.
Prior year employment status
Calculated as the share of working-age adults in cost-burdened, lower-income households by
employment status during 12 months prior to survey:
- Full-time: 35 or more hours per week
- Part-time: 34 or fewer hours per week
- Most of year: 27 or more weeks during the period
- Part of year: 26 or fewer weeks during the period
Educational attainment
Calculated as the share of individuals 25 years or older in cost-burdened, lower-income households
by highest level of education completed.
Data Notes
All dollar figures are in 2018 dollars.
Two changes to the methodology for determining gross rents and household income categories preclude
direct comparison of these estimates to those of prior reports released by the Philadelphia
Fed’s Community Development and Regional Outreach Department. First, utility costs for vacant
units are imputed based on the median utility costs of similarly
sized units. Second, households reporting zero or negative income that paid more than the Fair
Market Rent (as defined by the U.S. Department of Housing and Urban Development) for their unit
during the survey year were reclassified as “not lower-income” since their income
situation was assumed to be either temporary or not indicative of broader economic hardship.
To adjust for PUMA boundaries that were discontinuous with MSA boundaries, Cecil County, MD, is
excluded from estimates for the Philadelphia-Camden-Wilmington MSA, and Green County, PA, is
included in estimates for the Pittsburgh MSA.
Methodology
To read about the details of the methodology used in this analysis, click
here.