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Codebook for NHGIS data file 'nhgis0006_ds250_20205_tract'
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Contents
    - Data Summary
    - Data Dictionary
    - Citation and Use
 
Additional documentation on NHGIS data sources is available at: 
    https://www.nhgis.org/documentation/tabular-data 
 
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Data Summary
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Year:             2016-2020
Geographic level: Census Tract (by State--County)
Extent:           All areas
Dataset:          2020 American Community Survey: 5-Year Data [2016-2020, Tracts & Larger Areas]
   NHGIS code:    2016_2020_ACS5b
   NHGIS ID:      ds250
Breakdown(s):     Geographic Component:
                     Total area (00)
Data type(s):     (E) Estimates
                  (M) Margins of error
 
Tables:
 
1. Poverty Status in the Past 12 Months by Sex by Age
   Universe:    Population for whom poverty status is determined
   Source code: B17001
   NHGIS code:  AM63
 
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Data Dictionary
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Context Fields 
        GISJOIN:     GIS Join Match Code
        YEAR:        Data File Year
        STUSAB:      State Postal Abbreviation
        REGIONA:     Region Code
        DIVISIONA:   Division Code
        STATE:       State Name
        STATEA:      State Code
        COUNTY:      County Name
        COUNTYA:     County Code
        COUSUBA:     County Subdivision Code
        PLACEA:      Place Code
        TRACTA:      Census Tract Code
        CONCITA:     Consolidated City Code
        AIANHHA:     American Indian Area/Alaska Native Area/Hawaiian Home Land Code
        RES_ONLYA:   American Indian Area/Alaska Native Area (Reservation or Statistical Entity Only) Code
        TRUSTA:      American Indian Area (Off-Reservation Trust Land Only)/Hawaiian Home Land Code
        AIHHTLI:     American Indian Trust Land/ Hawaiian Home Land Indicator
        AITSCEA:     Tribal Subdivision/Remainder Code
        ANRCA:       Alaska Native Regional Corporation Code
        CBSAA:       Metropolitan Statistical Area/Micropolitan Statistical Area Code
        CSAA:        Combined Statistical Area Code
        METDIVA:     Metropolitan Division Code
        NECTAA:      New England City and Town Area Code
        CNECTAA:     Combined New England City and Town Area Code
        NECTADIVA:   New England City and Town Area Division Code
        UAA:         Urban Area Code
        CDCURRA:     Congressional District (2019-2021, 116th Congress) Code
        SLDUA:       State Legislative District (Upper Chamber) Code
        SLDLA:       State Legislative District (Lower Chamber) Code
        ZCTA5A:      5-Digit ZIP Code Tabulation Area Code
        SUBMCDA:     Subminor Civil Division Code
        SDELMA:      School District (Elementary)/Remainder Code
        SDSECA:      School District (Secondary)/Remainder Code
        SDUNIA:      School District (Unified)/Remainder Code
        PCI:         Principal City Indicator
        PUMAA:       Public Use Microdata Area Code
        GEOID:       Census Geographic Identifier
        BTTRA:       Tribal Census Tract Code
 
Data Type (E):
    Estimates
 
        NAME_E:      Area Name
 
    Table 1:     Poverty Status in the Past 12 Months by Sex by Age
    Universe:    Population for whom poverty status is determined
    Source code: B17001
    NHGIS code:  AM63
        AM63E001:    Total
        AM63E002:    Income in the past 12 months below poverty level
        AM63E003:    Income in the past 12 months below poverty level: Male
        AM63E004:    Income in the past 12 months below poverty level: Male: Under 5 years
        AM63E005:    Income in the past 12 months below poverty level: Male: 5 years
        AM63E006:    Income in the past 12 months below poverty level: Male: 6 to 11 years
        AM63E007:    Income in the past 12 months below poverty level: Male: 12 to 14 years
        AM63E008:    Income in the past 12 months below poverty level: Male: 15 years
        AM63E009:    Income in the past 12 months below poverty level: Male: 16 and 17 years
        AM63E010:    Income in the past 12 months below poverty level: Male: 18 to 24 years
        AM63E011:    Income in the past 12 months below poverty level: Male: 25 to 34 years
        AM63E012:    Income in the past 12 months below poverty level: Male: 35 to 44 years
        AM63E013:    Income in the past 12 months below poverty level: Male: 45 to 54 years
        AM63E014:    Income in the past 12 months below poverty level: Male: 55 to 64 years
        AM63E015:    Income in the past 12 months below poverty level: Male: 65 to 74 years
        AM63E016:    Income in the past 12 months below poverty level: Male: 75 years and over
        AM63E017:    Income in the past 12 months below poverty level: Female
        AM63E018:    Income in the past 12 months below poverty level: Female: Under 5 years
        AM63E019:    Income in the past 12 months below poverty level: Female: 5 years
        AM63E020:    Income in the past 12 months below poverty level: Female: 6 to 11 years
        AM63E021:    Income in the past 12 months below poverty level: Female: 12 to 14 years
        AM63E022:    Income in the past 12 months below poverty level: Female: 15 years
        AM63E023:    Income in the past 12 months below poverty level: Female: 16 and 17 years
        AM63E024:    Income in the past 12 months below poverty level: Female: 18 to 24 years
        AM63E025:    Income in the past 12 months below poverty level: Female: 25 to 34 years
        AM63E026:    Income in the past 12 months below poverty level: Female: 35 to 44 years
        AM63E027:    Income in the past 12 months below poverty level: Female: 45 to 54 years
        AM63E028:    Income in the past 12 months below poverty level: Female: 55 to 64 years
        AM63E029:    Income in the past 12 months below poverty level: Female: 65 to 74 years
        AM63E030:    Income in the past 12 months below poverty level: Female: 75 years and over
        AM63E031:    Income in the past 12 months at or above poverty level
        AM63E032:    Income in the past 12 months at or above poverty level: Male
        AM63E033:    Income in the past 12 months at or above poverty level: Male: Under 5 years
        AM63E034:    Income in the past 12 months at or above poverty level: Male: 5 years
        AM63E035:    Income in the past 12 months at or above poverty level: Male: 6 to 11 years
        AM63E036:    Income in the past 12 months at or above poverty level: Male: 12 to 14 years
        AM63E037:    Income in the past 12 months at or above poverty level: Male: 15 years
        AM63E038:    Income in the past 12 months at or above poverty level: Male: 16 and 17 years
        AM63E039:    Income in the past 12 months at or above poverty level: Male: 18 to 24 years
        AM63E040:    Income in the past 12 months at or above poverty level: Male: 25 to 34 years
        AM63E041:    Income in the past 12 months at or above poverty level: Male: 35 to 44 years
        AM63E042:    Income in the past 12 months at or above poverty level: Male: 45 to 54 years
        AM63E043:    Income in the past 12 months at or above poverty level: Male: 55 to 64 years
        AM63E044:    Income in the past 12 months at or above poverty level: Male: 65 to 74 years
        AM63E045:    Income in the past 12 months at or above poverty level: Male: 75 years and over
        AM63E046:    Income in the past 12 months at or above poverty level: Female
        AM63E047:    Income in the past 12 months at or above poverty level: Female: Under 5 years
        AM63E048:    Income in the past 12 months at or above poverty level: Female: 5 years
        AM63E049:    Income in the past 12 months at or above poverty level: Female: 6 to 11 years
        AM63E050:    Income in the past 12 months at or above poverty level: Female: 12 to 14 years
        AM63E051:    Income in the past 12 months at or above poverty level: Female: 15 years
        AM63E052:    Income in the past 12 months at or above poverty level: Female: 16 and 17 years
        AM63E053:    Income in the past 12 months at or above poverty level: Female: 18 to 24 years
        AM63E054:    Income in the past 12 months at or above poverty level: Female: 25 to 34 years
        AM63E055:    Income in the past 12 months at or above poverty level: Female: 35 to 44 years
        AM63E056:    Income in the past 12 months at or above poverty level: Female: 45 to 54 years
        AM63E057:    Income in the past 12 months at or above poverty level: Female: 55 to 64 years
        AM63E058:    Income in the past 12 months at or above poverty level: Female: 65 to 74 years
        AM63E059:    Income in the past 12 months at or above poverty level: Female: 75 years and over
 
Data Type (M):
    Margins of error
 
        NAME_M:      Area Name
 
    Table 1:     Poverty Status in the Past 12 Months by Sex by Age
    Universe:    Population for whom poverty status is determined
    Source code: B17001
    NHGIS code:  AM63
        AM63M001:    Total
        AM63M002:    Income in the past 12 months below poverty level
        AM63M003:    Income in the past 12 months below poverty level: Male
        AM63M004:    Income in the past 12 months below poverty level: Male: Under 5 years
        AM63M005:    Income in the past 12 months below poverty level: Male: 5 years
        AM63M006:    Income in the past 12 months below poverty level: Male: 6 to 11 years
        AM63M007:    Income in the past 12 months below poverty level: Male: 12 to 14 years
        AM63M008:    Income in the past 12 months below poverty level: Male: 15 years
        AM63M009:    Income in the past 12 months below poverty level: Male: 16 and 17 years
        AM63M010:    Income in the past 12 months below poverty level: Male: 18 to 24 years
        AM63M011:    Income in the past 12 months below poverty level: Male: 25 to 34 years
        AM63M012:    Income in the past 12 months below poverty level: Male: 35 to 44 years
        AM63M013:    Income in the past 12 months below poverty level: Male: 45 to 54 years
        AM63M014:    Income in the past 12 months below poverty level: Male: 55 to 64 years
        AM63M015:    Income in the past 12 months below poverty level: Male: 65 to 74 years
        AM63M016:    Income in the past 12 months below poverty level: Male: 75 years and over
        AM63M017:    Income in the past 12 months below poverty level: Female
        AM63M018:    Income in the past 12 months below poverty level: Female: Under 5 years
        AM63M019:    Income in the past 12 months below poverty level: Female: 5 years
        AM63M020:    Income in the past 12 months below poverty level: Female: 6 to 11 years
        AM63M021:    Income in the past 12 months below poverty level: Female: 12 to 14 years
        AM63M022:    Income in the past 12 months below poverty level: Female: 15 years
        AM63M023:    Income in the past 12 months below poverty level: Female: 16 and 17 years
        AM63M024:    Income in the past 12 months below poverty level: Female: 18 to 24 years
        AM63M025:    Income in the past 12 months below poverty level: Female: 25 to 34 years
        AM63M026:    Income in the past 12 months below poverty level: Female: 35 to 44 years
        AM63M027:    Income in the past 12 months below poverty level: Female: 45 to 54 years
        AM63M028:    Income in the past 12 months below poverty level: Female: 55 to 64 years
        AM63M029:    Income in the past 12 months below poverty level: Female: 65 to 74 years
        AM63M030:    Income in the past 12 months below poverty level: Female: 75 years and over
        AM63M031:    Income in the past 12 months at or above poverty level
        AM63M032:    Income in the past 12 months at or above poverty level: Male
        AM63M033:    Income in the past 12 months at or above poverty level: Male: Under 5 years
        AM63M034:    Income in the past 12 months at or above poverty level: Male: 5 years
        AM63M035:    Income in the past 12 months at or above poverty level: Male: 6 to 11 years
        AM63M036:    Income in the past 12 months at or above poverty level: Male: 12 to 14 years
        AM63M037:    Income in the past 12 months at or above poverty level: Male: 15 years
        AM63M038:    Income in the past 12 months at or above poverty level: Male: 16 and 17 years
        AM63M039:    Income in the past 12 months at or above poverty level: Male: 18 to 24 years
        AM63M040:    Income in the past 12 months at or above poverty level: Male: 25 to 34 years
        AM63M041:    Income in the past 12 months at or above poverty level: Male: 35 to 44 years
        AM63M042:    Income in the past 12 months at or above poverty level: Male: 45 to 54 years
        AM63M043:    Income in the past 12 months at or above poverty level: Male: 55 to 64 years
        AM63M044:    Income in the past 12 months at or above poverty level: Male: 65 to 74 years
        AM63M045:    Income in the past 12 months at or above poverty level: Male: 75 years and over
        AM63M046:    Income in the past 12 months at or above poverty level: Female
        AM63M047:    Income in the past 12 months at or above poverty level: Female: Under 5 years
        AM63M048:    Income in the past 12 months at or above poverty level: Female: 5 years
        AM63M049:    Income in the past 12 months at or above poverty level: Female: 6 to 11 years
        AM63M050:    Income in the past 12 months at or above poverty level: Female: 12 to 14 years
        AM63M051:    Income in the past 12 months at or above poverty level: Female: 15 years
        AM63M052:    Income in the past 12 months at or above poverty level: Female: 16 and 17 years
        AM63M053:    Income in the past 12 months at or above poverty level: Female: 18 to 24 years
        AM63M054:    Income in the past 12 months at or above poverty level: Female: 25 to 34 years
        AM63M055:    Income in the past 12 months at or above poverty level: Female: 35 to 44 years
        AM63M056:    Income in the past 12 months at or above poverty level: Female: 45 to 54 years
        AM63M057:    Income in the past 12 months at or above poverty level: Female: 55 to 64 years
        AM63M058:    Income in the past 12 months at or above poverty level: Female: 65 to 74 years
        AM63M059:    Income in the past 12 months at or above poverty level: Female: 75 years and over
 
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Citation and Use of NHGIS Data
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        Jonathan Schroeder, David Van Riper, Steven Manson, Grace Cooper, Zachary Krause, Tracy Kugler, Tsu Zhu, and Steven Ruggles. 
        IPUMS National Historical Geographic Information System: Version 21.0 
        [dataset]. Minneapolis, MN: IPUMS. 2026. 
        http://doi.org/10.18128/D050.V21.0

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