Geography2010 census tracts; 50 states and DC
Release2019 LRAM parser v1
Available records72,531
What you can build
2019 historical food access indicators; not current store availability. Use this dataset as a sourced input to an application, analytical model or retrieval tool. Retain its native dimensions when joining it with your own records.
Query USDA Large Retailer Access Map
The example below is a real bounded request against the available release. Replace the environment variable with your server-side API credential. Review endpoint parameters and response schemas before changing selectors.
Verified API request
curl --fail --get "https://api.geoamcan.com/v1/food-access?dataset=usda-lram&limit=1&geo_type=tract&geoid=13305970500&vintage=2010" \
-H "Authorization: Bearer $GEOAMCAN_API_KEY"Saved response excerpt
{
"source_attribution": {
"usda-lram": "USDA ERS — USDA Large Retailer Access Map; https://ers.usda.gov/data-products/food-access-research-atlas/download-the-data; official source snapshots, no endorsement implied."
},
"requested_area": {
"include_geometry": false,
"dataset": "usda-lram",
"lat": null,
"lon": null,
"geo_type": "tract",
"geoid": "13305970500",
"vintage": "2010",
"designation_id": null,
"area": null
},
"data": [
{
"dataset": "usda-lram",
"source": "USDA ERS",
"release": "2019 LRAM parser v1",
"geographic_resolution": "tract",
"geoid": "13305970500",
"geography_vintage": "2010",
"period": "2019",
"naics": "",
"component": "Food Access Research Atlas.csv",
"metrics": {
"Urban": 0,
"lapop1": 3470,
"OHU2010": 1312,
"Pop2010": 5426,
"laaian1": 41,
"lahisp1": 525,
"lahunv1": 23,
"lakids1": 443,
"lalowi1": 1997,
"lapop10": null,
"lapop20": null,
"lasnap1": 123
},
"margins_of_error": {},
"flags": {
"scope": "condition_indicator",
"record": {
"context": {
"State": "Georgia",
"County": "Wayne County",
"CensusTract": "13305970500"
},
"missing": {
"lapop10": {
"status": "text:NULL",
"source_value": "NULL"
},
"lapop20": {
"status": "text:NULL",
"source_value": "NULL"
},
"laaian10": {
"status": "text:NULL",
"source_value": "NULL"
},
"laaian20": {
"status": "text:NULL",
"source_value": "NULL"
},
"lahisp10": {
"status": "text:NULL",
"source_value": "NULL"
},
"lahisp20": {
"status": "text:NULL",
"source_value": "NULL"
},
"lahunv10": {
"status": "text:NULL",
"source_value": "NULL"
},
"lahunv20": {
"status": "text:NULL",
"source_value": "NULL"
},
"lakids10": {
"status": "text:NULL",
"source_value": "NULL"
},
"lakids20": {
"status": "text:NULL",
"source_value": "NULL"
},
"lalowi10": {
"status": "text:NULL",
"source_value": "NULL"
},
"lalowi20": {
"status": "text:NULL",
"source_value": "NULL"
}
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"source_table": "Food Access Research Atlas.csv",
"interpretation": "Native historical tract indicators, not current store availability or custom polygon measurements.",
"reference_period": "2019"
},
"source_status": "published",
"designation_id": "Food Access Research Atlas.csv",
"source_component": {
"source_geoid": "13305970500",
"representation": "Official USDA generalized 2019 food-access geometry, based on 2010 Census tracts with published updates"
},
"geometry_available": true
}
}
],
"availability": {
"usda-lram": {
"status": "matches",
"coverage": "United States and source-published territories only; no Canadian equivalents",
"release_metadata": {
"passed": true,
"country": "US",
"records": 72531,
"retrieved_at": "2026-10-30T01:30:20.577351+00:00",
"validated_at": "2026-10-30T01:49:51.470008+00:00",
"coverage_gaps": [],
"missing_values": [
{
"records": 72531,
"row_key": "Food Access Research Atlas.csv",
"missing_cells": 4330227
}
],
"source_periods": {
"retailer_reference": "2019",
"population_reference": "2010 Census",
"income_poverty_reference": "2014-2018 ACS"
},
"geographic_counts": [
{
"states": [
"01"
],
"records": 72531,
"vintage": "2010"
}
],
"row_storage_bytes": 161522688,
"source_attribution": "USDA ERS — USDA Large Retailer Access Map; https://ers.usda.gov/data-products/food-access-research-atlas/download-the-data; official source snapshots, no endorsement implied.",
"geometry_representation": "Official USDA 2019 generalized native tract polygons, retaining published corrections to 2010 geography"
},
"interpretation": "Native published conditions; no current store availability or polygon estimates."
}
},
"next_offset": null,
"returned_count": 1,
"complete": true,
"snapshot": {
"usda-lram": {
"release_id": 63,
"release": "2019 LRAM parser v1",
"fingerprint": "8b429c05bae944a1669865f3eae223af"
},
"tiger": {
"release_id": 1,
"release": "2026 + native 2024/2020",
"fingerprint": "0400658a689c0c2b04db479935dae54a"
},
"geography-extended": {
"release_id": 29,
"release": "2026 + native 2024",
"fingerprint": "e63402f6d0af12bc02df1e39a93b9fb8"
},
"designation-boundaries": {
"release_id": 62,
"release": "2010 native tracts + 2020 Island Areas parser v1",
"fingerprint": "c15cd69ac14013bea7024a09f5902f17"
}
},
"metric_definitions": {
"usda-lram": {
"Urban": {
"label": "Urban tract",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "Urban",
"LongName": "Urban tract",
"Description": "Flag for urban tract"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"Pop2010": {
"label": "Population, tract total",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "POP2010",
"LongName": "Population, tract total",
"Description": "Population count from 2010 census"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"OHU2010": {
"label": "Housing units, total",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "OHU2010",
"LongName": "Housing units, total",
"Description": "Occupied housing unit count from 2010 census"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"GroupQuartersFlag": {
"label": "Group quarters, tract with high share",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "GroupQuartersFlag",
"LongName": "Group quarters, tract with high share",
"Description": "Flag for tract where >=67%"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"NUMGQTRS": {
"label": "Group quarters, tract population residing in, number",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "NUMGQTRS",
"LongName": "Group quarters, tract population residing in, number",
"Description": "Count of tract population residing in group quarters"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"PCTGQTRS": {
"label": "Group quarters, tract population residing in, share",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "PCTGQTRS",
"LongName": "Group quarters, tract population residing in, share",
"Description": "Percent of tract population residing in group quarters"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"LILATracts_1And10": {
"label": "Low income and low access tract measured at 1 mile for urban areas and 10 miles for rural areas",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "LILATracts_1And10",
"LongName": "Low income and low access tract measured at 1 mile for urban areas and 10 miles for rural areas",
"Description": "Flag for low-income and low access when considering low accessibilty at 1 and 10 miles"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"LILATracts_halfAnd10": {
"label": "Low income and low access tract measured at 1/2 mile for urban areas and 10 miles for rural areas",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "LILATracts_halfAnd10",
"LongName": "Low income and low access tract measured at 1/2 mile for urban areas and 10 miles for rural areas",
"Description": "Flag for low-income and low access when considering low accessibilty at 1/2 and 10 miles"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"LILATracts_1And20": {
"label": "Low income and low access tract measured at 1 mile for urban areas and 20 miles for rural areas",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "LILATracts_1And20",
"LongName": "Low income and low access tract measured at 1 mile for urban areas and 20 miles for rural areas",
"Description": "Flag for low-income and low access when considering low accessibilty at 1 and 20 miles"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"LILATracts_Vehicle": {
"label": "Low income and low access tract using vehicle access or low income and low access tract measured at 20 miles",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "LILATracts_Vehicle",
"LongName": "Low income and low access tract using vehicle access or low income and low access tract measured at 20 miles",
"Description": "Flag for low-income and low access when considering vehicle access or at 20 miles"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"HUNVFlag": {
"label": "Vehicle access, tract with low vehicle access",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "HUNVFlag",
"LongName": "Vehicle access, tract with low vehicle access",
"Description": "Flag for tract where >= 100 of households do not have a vehicle, and beyond 1/2 mile from supermarket"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
},
"LowIncomeTracts": {
"label": "Low income tract",
"unit": "source-defined; see dictionary",
"universe": null,
"source_definition": {
"vintage": "2010",
"dictionary": {
"Field": "LowIncomeTracts",
"LongName": "Low income tract",
"Description": "Flag for low income tract"
},
"source_url": "https://ers.usda.gov/media/5627/2019-large-retailer-access-map-lram-formerly-known-as-the-food-access-research-atlas-fara-data.zip?v=83734",
"definition_url": "https://ers.usda.gov/data-products/food-access-research-atlas/documentation"
}
}
}
},
"coverage_limitations": {
"usda-lram": []
},
"native_area_contexts": {},
"commuting_flows": []
}Captured 2026-11-03. Excerpt omits pagination credentials and may shorten nested records. Download verified source responses.
Coverage and interpretation
Coverage is limited to published source geographies and releases. Missing, suppressed and unavailable observations must not be treated as zero.
The active release shown here is a catalog snapshot. Check the live catalog and response provenance for current readiness. The underlying public source and Geoamcan access terms are separate; consult the source’s licensing and attribution requirements.
Source and methodology
Source: USDA ERS. Geoamcan is an independent API provider, with no agency affiliation or endorsement. Read our data methodology for source handling, geographic joins and update practices.
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