Description

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The Location Affordability Index (LAI) estimates the percentage of a family’s income dedicated to the combined cost of housing and transportation in a given location. Because what is “affordable” is different for everyone, users can choose among a diverse set of family profiles—which vary by household income, size, and number of commuters—and see the affordability landscape for each in a given neighborhood, city, or region. LAIM Version 2 employs an SEM regression analysis for auto ownership, transit use and housing costs and a second-order flexible form of ordinary least squares (OLS) model for VMT. It allows for all of the input variables to be used in the calculation of the coefficients. This somewhat complex modeling technique is employed to better model interactions between the endogenous variables. The goodness of fit is now measured by a combination of measures rather than by a simple R-squared value (see Section V. Model Structure and Formula, Aii. on goodness of fit measures on page 22 for further discussion). Additionally, to keep the model as simple as possible, input measures of transit access are no longer used. However since two endogenous variables are themselves measure of transit use (i.e., percent of commuters using transit for journey to work for home-owners and renters), the model works well. These revisions allow LAIM Version 2 to model housing and transportation costs by tenure for households in urban, suburban, and rural settings. To learn more about the Location Affordability Index (v.2.0) visit: http://www.locationaffordability.info/LAPMethodsV2.pdf. Data Dictionary: DD_Location Affordability Indev v.2.0 Date of Coverage: 2008-2012 Data Updated: Annually

Dataset Attributes

  • OBJECTID
    Number
  • GEOID
    Text
    {"value"=>"060190006003", "count"=>1} (), {"value"=>"391730224003", "count"=>1} (), {"value"=>"390490081323", "count"=>1} (), {"value"=>"340350543002", "count"=>1} (), {"value"=>"250092543012", "count"=>1} (), {"value"=>"160519604004", "count"=>1} (), {"value"=>"171670005033", "count"=>1} (), {"value"=>"121030262001", "count"=>1} (), {"value"=>"121030254152", "count"=>1} (), {"value"=>"484679501003", "count"=>1} ()
  • STATE
    Text
  • COUNTY
    Text
    {"value"=>"037", "count"=>8219} (), {"value"=>"031", "count"=>7559} (), {"value"=>"003", "count"=>7054} (), {"value"=>"013", "count"=>6173} (), {"value"=>"001", "count"=>5112} (), {"value"=>"059", "count"=>5000} (), {"value"=>"005", "count"=>4936} (), {"value"=>"029", "count"=>3946} (), {"value"=>"081", "count"=>3863} (), {"value"=>"017", "count"=>3823} ()
  • TRACT
    Text
  • BLOCKGROUP
    Text
  • STUSAB
    Text
  • households
    Number
    1 to 15078
  • area_median_income
    Number
    19624 to 106426
  • blkgrp_median_income_owners
    Number
    870.3177 to 825734.03629
  • blkgrp_median_income_renters
    Number
    646.23221 to 378828.63944
  • avg_hh_size_owners
    Number
    1 to 14.71
  • avg_hh_size_renters
    Number
    1 to 21.38
  • commuters_per_hh_owners
    Number
  • commuters_per_hh_renters
    Number
    0 to 6.13591
  • pct_renters
    Number
  • gross_hh_density
    Number
    1.0e-05 to 549.05216
  • median_rooms_per_owner_unit
    Number
    1.3 to 9
  • median_rooms_per_renter_unit
    Number
  • pct_detatched_single_family_unit
    Number
  • median_commute_distance
    Number
  • block_denstiy
    Number
    1.0e-05 to 1.9823
  • employment_access_index
    Number
  • local_job_density
    Number
    0 to 935.43631
  • local_retail_job_density
    Number
    0 to 55.42504
  • retail_access_index
    Number
  • hh_type1_income
    Number
  • hh_type1_size
    Number
    4 to 4
  • hh_type1_workers
    Number
  • hh_type1_ht
    Number
    18.76675 to 195.76181
  • hh_type1_h
    Number
    1.40532 to 138.2658
  • hh_type1_t
    Number
    5.91389 to 65.73395
  • hh_type1_autos
    Number
    0 to 2.90606
  • hh_type1_vmt
    Number
  • hh_type1_transit_trips
    Number
    0 to 2492.14965
  • hh_type1_ht_own
    Number
    13.65949 to 216.77593
  • hh_type1_h_own
    Number
  • hh_type1_t_own
    Number
    5.91389 to 68.36134
  • hh_type1_autos_own
    Number
    0 to 3.11
  • hh_type1_vmt_own
    Number
    3264.84 to 47503.8
  • hh_type1_transit_trips_own
    Number
  • hh_type1_ht_rent
    Number
    13.28494 to 143.94075
  • hh_type1_h_rent
    Number
  • hh_type1_t_rent
    Number
  • hh_type1_autos_rent
    Number
    0 to 2.72
  • hh_type1_vmt_rent
    Number
  • hh_type1_transit_trips_rent
    Number
    0 to 2492.14965
  • hh_type2_income
    Number
    11720 to 11720
  • hh_type2_size
    Number
  • hh_type2_workers
    Number
    1 to 1
  • hh_type2_ht
    Number
    47.46188 to 412.66499
  • hh_type2_h
    Number
    5.11945 to 332.76451
  • hh_type2_t
    Number
    10.83826 to 106.71146
  • hh_type2_autos
    Number
  • hh_type2_vmt
    Number
    0 to 34283.52
  • hh_type2_transit_trips
    Number
    0 to 2492.14965
  • hh_type2_ht_own
    Number
  • hh_type2_h_own
    Number
    10.23891 to 332.76451
  • hh_type2_t_own
    Number
    10.32293 to 110.1984
  • hh_type2_autos_own
    Number
    0 to 1.92
  • hh_type2_vmt_own
    Number
    0 to 34283.52
  • hh_type2_transit_trips_own
    Number
  • hh_type2_ht_rent
    Number
  • hh_type2_h_rent
    Number
  • hh_type2_t_rent
    Number
  • hh_type2_autos_rent
    Number
  • hh_type2_vmt_rent
    Number
  • hh_type2_transit_trips_rent
    Number
  • hh_type3_income
    Number
  • hh_type3_size
    Number
  • hh_type3_workers
    Number
  • hh_type3_ht
    Number
  • hh_type3_h
    Number
  • hh_type3_t
    Number
  • hh_type3_autos
    Number
  • hh_type3_vmt
    Number
  • hh_type3_transit_trips
    Number
  • hh_type3_ht_own
    Number
  • hh_type3_h_own
    Number
  • hh_type3_t_own
    Number
  • hh_type3_autos_own
    Number
  • hh_type3_vmt_own
    Number
  • hh_type3_transit_trips_own
    Number
  • hh_type3_ht_rent
    Number
  • hh_type3_h_rent
    Number
  • hh_type3_t_rent
    Number
  • hh_type3_autos_rent
    Number
  • hh_type3_vmt_rent
    Number
  • hh_type3_transit_trips_rent
    Number
  • hh_type4_income
    Number
  • hh_type4_size
    Number
  • hh_type4_workers
    Number
  • hh_type4_ht
    Number
  • hh_type4_h
    Number
  • hh_type4_t
    Number
  • hh_type4_autos
    Number
  • hh_type4_vmt
    Number
  • hh_type4_transit_trips
    Number
  • hh_type4_ht_own
    Number
  • hh_type4_h_own
    Number
  • hh_type4_t_own
    Number
  • hh_type4_autos_own
    Number
  • hh_type4_vmt_own
    Number
  • hh_type4_transit_trips_own
    Number
  • hh_type4_ht_rent
    Number
  • hh_type4_h_rent
    Number
  • hh_type4_t_rent
    Number
  • hh_type4_autos_rent
    Number
  • hh_type4_vmt_rent
    Number
  • hh_type4_transit_trips_rent
    Number
  • hh_type5_income
    Number
  • hh_type5_size
    Number
  • hh_type5_workers
    Number
  • hh_type5_ht
    Number
  • hh_type5_h
    Number
  • hh_type5_t
    Number
  • hh_type5_autos
    Number
  • hh_type5_vmt
    Number
  • hh_type5_transit_trips
    Number
  • hh_type5_ht_own
    Number
  • hh_type5_h_own
    Number
  • hh_type5_t_own
    Number
  • hh_type5_autos_own
    Number
  • hh_type5_vmt_own
    Number
  • hh_type5_transit_trips_own
    Number
  • hh_type5_ht_rent
    Number
  • hh_type5_h_rent
    Number
  • hh_type5_t_rent
    Number
  • hh_type5_autos_rent
    Number
  • hh_type5_vmt_rent
    Number
  • hh_type5_transit_trips_rent
    Number
  • hh_type6_income
    Number
  • hh_type6_size
    Number
  • hh_type6_workers
    Number
  • hh_type6_ht
    Number
  • hh_type6_h
    Number
  • hh_type6_t
    Number
  • hh_type6_autos
    Number
  • hh_type6_vmt
    Number
  • hh_type6_transit_trips
    Number
  • hh_type6_ht_own
    Number
  • hh_type6_h_own
    Number
  • hh_type6_t_own
    Number
  • hh_type6_autos_own
    Number
  • hh_type6_vmt_own
    Number
  • hh_type6_transit_trips_own
    Number
  • hh_type6_ht_rent
    Number
  • hh_type6_h_rent
    Number
  • hh_type6_t_rent
    Number
  • hh_type6_autos_rent
    Number
  • hh_type6_vmt_rent
    Number
  • hh_type6_transit_trips_rent
    Number
  • hh_type7_income
    Number
  • hh_type7_size
    Number
  • hh_type7_workers
    Number
  • hh_type7_ht
    Number
  • hh_type7_h
    Number
  • hh_type7_t
    Number
  • hh_type7_autos
    Number
  • hh_type7_vmt
    Number
  • hh_type7_transit_trips
    Number
  • hh_type7_ht_own
    Number
  • hh_type7_h_own
    Number
  • hh_type7_t_own
    Number
  • hh_type7_autos_own
    Number
  • hh_type7_vmt_own
    Number
  • hh_type7_transit_trips_own
    Number
  • hh_type7_ht_rent
    Number
  • hh_type7_h_rent
    Number
  • hh_type7_t_rent
    Number
  • hh_type7_autos_rent
    Number
  • hh_type7_vmt_rent
    Number
  • hh_type7_transit_trips_rent
    Number
  • hh_type8_income
    Number
  • hh_type8_size
    Number
  • hh_type8_workers
    Number
  • hh_type8_ht
    Number
  • hh_type8_h
    Number
  • hh_type8_t
    Number
  • hh_type8_autos
    Number
  • hh_type8_vmt
    Number
  • hh_type8_transit_trips
    Number
  • hh_type8_ht_own
    Number
  • hh_type8_h_own
    Number
  • hh_type8_t_own
    Number
  • hh_type8_autos_own
    Number
  • hh_type8_vmt_own
    Number
  • hh_type8_transit_trips_own
    Number
  • hh_type8_ht_rent
    Number
  • hh_type8_h_rent
    Number
  • hh_type8_t_rent
    Number
  • hh_type8_autos_rent
    Number
  • hh_type8_vmt_rent
    Number
  • hh_type8_transit_trips_rent
    Number
  • Shape__Area
    Number
  • Shape__Length
    Number

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