U.S. National Register of Historic Places Database v.1.0.0
100,793 Database Records
The U.S. National Register of Historic Places Database provides a structured index of 100,793 current listings published by the National Park Service. It covers buildings, districts, sites, structures, and objects with National Register reference numbers, names, jurisdiction, listing and landmark dates, acreage, request types, significance levels, areas of significance, alternate names, official record links, and NPS public GIS context where available. Restricted addresses and precise locations are suppressed. The protected release includes matching UTF-8 CSV, JSON, and SQLite data plus schema, samples, statistics, and complete source documentation.
Table Schema Database Field Statistics
Release structure
U.S. National Register of Historic Places Database
Review the published tables, record coverage, and field names included with release 1.0.0.
- Database
- #806
- Version
- 1.0.0
- Format
- XML schema
Data dictionary
Tables and fields
| Field | Type | Required | Description |
|---|---|---|---|
| reference_number | string | Yes | NPS National Register reference number preserved as text, including leading zeroes. |
| property_name | string | Yes | Current property or district name in the official listed-properties export. |
| property_type | string | Yes | Controlled NPS category: BUILDING, DISTRICT, SITE, STRUCTURE, OBJECT, or NOT INDICATED. |
| listing_status | string | Yes | Normalized official listing status. |
| request_type | string | No | Normalized NPS request or action type associated with the consolidated listing record. |
| state | string | Yes | Official state, district, territory, or associated jurisdiction name. |
| county | string | Yes | Official county or county-equivalent text, when supplied. |
| city | string | No | Official city text, when supplied. |
| street_address | string | No | Official public address text; always suppressed for restricted records. |
| restricted_address_flag | boolean | Yes | Whether NPS marks the address as restricted. |
| acreage | number | No | Official acreage as a nonnegative decimal when supplied. |
| listed_date | string | No | National Register listing date in ISO 8601 format. |
| national_historic_landmark_designated_date | string | No | National Historic Landmark designation date in ISO 8601 format, when supplied. |
| significance_international | boolean | Yes | Official international significance flag. |
| significance_national | boolean | Yes | Official national significance flag. |
| significance_state | boolean | Yes | Official state significance flag. |
| significance_local | boolean | Yes | Official local significance flag. |
| significance_not_indicated | boolean | Yes | Official not-indicated significance flag. |
| areas_of_significance | string | No | Distinct official areas of significance, normalized, sorted, and joined with a vertical bar. |
| other_names | string | No | Distinct official alternate names, normalized, sorted, and joined with a vertical bar. |
| park_name | string | No | NPS park name when supplied. |
| property_id | string | No | Official NPS property identifier preserved as text. |
| official_record_url | string | No | Source-provided NPS or National Archives record URL after host and scheme validation. |
| latitude | number | No | Latitude from the unrestricted NPS public GIS source; null for restricted records and records without a public GIS match. |
| longitude | number | No | Longitude from the unrestricted NPS public GIS source; null for restricted records and records without a public GIS match. |
| geometry_precision_class | string | Yes | Explicit location representation class. Polygon extent centers and source-generated centroids are never exact property locations. |
| gis_resource_type | string | No | Resource type from the unrestricted NPS GIS layer. |
| gis_map_method | string | No | NPS GIS map method. |
| gis_source_accuracy | string | No | NPS GIS horizontal-accuracy statement. |
| gis_source_scale | string | No | NPS GIS source scale. |
| gis_source_date | string | No | NPS GIS source date in ISO 8601 format. |
| gis_edit_date | string | No | NPS GIS edit date in ISO 8601 format. |
| source_updated_date | string | Yes | Published cutoff of the official listed-properties snapshot. |
| source_url | string | Yes | Official NPS listed-properties dataset URL. |
| retrieved_at | string | Yes | UTC retrieval timestamp recorded for this build input. |
| reviewed_date | string | Yes | Oddity source and methodology review date. |
Release at a glance
What is inside this database
Review verified record totals, geographic coverage, classifications, and field completeness for U.S. National Register of Historic Places Database.
reference_numberNPS National Register reference number preserved as text, including leading zeroes.
- Distinct
- 100,793
- Missing
- 0.0%
property_nameCurrent property or district name in the official listed-properties export.
- Distinct
- 92,899
- Missing
- 0.0%
property_typeControlled NPS category: BUILDING, DISTRICT, SITE, STRUCTURE, OBJECT, or NOT INDICATED.
- Distinct
- 6
- Missing
- 0.0%
listing_statusNormalized official listing status.
- Distinct
- 1
- Missing
- 0.0%
request_typeNormalized NPS request or action type associated with the consolidated listing record.
- Distinct
- 14
- Missing
- 0.0%
stateOfficial state, district, territory, or associated jurisdiction name.
- Distinct
- 62
- Missing
- 0.0%
countyOfficial county or county-equivalent text, when supplied.
- Distinct
- 1,896
- Missing
- 0.0%
cityOfficial city text, when supplied.
- Distinct
- 14,643
- Missing
- 0.0%
street_addressOfficial public address text; always suppressed for restricted records.
- Distinct
- 88,590
- Missing
- 5.7%
restricted_address_flagWhether NPS marks the address as restricted.
- Distinct
- 2
- Missing
- 0.0%
acreageOfficial acreage as a nonnegative decimal when supplied.
- Distinct
- 4,209
- Missing
- 0.5%
listed_dateNational Register listing date in ISO 8601 format.
- Distinct
- 10,124
- Missing
- 0.2%
national_historic_landmark_designated_dateNational Historic Landmark designation date in ISO 8601 format, when supplied.
- Distinct
- 250
- Missing
- 97.3%
significance_internationalOfficial international significance flag.
- Distinct
- 2
- Missing
- 0.0%
significance_nationalOfficial national significance flag.
- Distinct
- 2
- Missing
- 0.0%
significance_stateOfficial state significance flag.
- Distinct
- 2
- Missing
- 0.0%
significance_localOfficial local significance flag.
- Distinct
- 2
- Missing
- 0.0%
significance_not_indicatedOfficial not-indicated significance flag.
- Distinct
- 2
- Missing
- 0.0%
areas_of_significanceDistinct official areas of significance, normalized, sorted, and joined with a vertical bar.
- Distinct
- 5,457
- Missing
- 0.4%
other_namesDistinct official alternate names, normalized, sorted, and joined with a vertical bar.
- Distinct
- 45,375
- Missing
- 53.5%
park_nameNPS park name when supplied.
- Distinct
- 309
- Missing
- 98.5%
property_idOfficial NPS property identifier preserved as text.
- Distinct
- 100,373
- Missing
- 0.0%
official_record_urlSource-provided NPS or National Archives record URL after host and scheme validation.
- Distinct
- 75,621
- Missing
- 24.8%
latitudeLatitude from the unrestricted NPS public GIS source; null for restricted records and records without a public GIS match.
- Distinct
- 88,565
- Missing
- 11.2%
longitudeLongitude from the unrestricted NPS public GIS source; null for restricted records and records without a public GIS match.
- Distinct
- 88,729
- Missing
- 11.2%
geometry_precision_classExplicit location representation class. Polygon extent centers and source-generated centroids are never exact property locations.
- Distinct
- 5
- Missing
- 0.0%
gis_resource_typeResource type from the unrestricted NPS GIS layer.
- Distinct
- 5
- Missing
- 11.2%
gis_map_methodNPS GIS map method.
- Distinct
- 3
- Missing
- 11.2%
gis_source_accuracyNPS GIS horizontal-accuracy statement.
- Distinct
- 232
- Missing
- 11.2%
gis_source_scaleNPS GIS source scale.
- Distinct
- 291
- Missing
- 11.2%
gis_source_dateNPS GIS source date in ISO 8601 format.
- Distinct
- 8,950
- Missing
- 12.1%
gis_edit_dateNPS GIS edit date in ISO 8601 format.
- Distinct
- 539
- Missing
- 11.2%
source_updated_datePublished cutoff of the official listed-properties snapshot.
- Distinct
- 1
- Missing
- 0.0%
source_urlOfficial NPS listed-properties dataset URL.
- Distinct
- 1
- Missing
- 0.0%
retrieved_atUTC retrieval timestamp recorded for this build input.
- Distinct
- 1
- Missing
- 0.0%
reviewed_dateOddity source and methodology review date.
- Distinct
- 1
- Missing
- 0.0%
Geometry Precision
- Source Generated Point Or Centroid69,182
- Polygon Extent Center18,941
- Restricted Suppressed5,697
- Unavailable5,630
- Public Point1,343
Listing Year
Showing the 12 largest groups from 61 represented values.
- 19824,725
- 19834,379
- 19804,315
- 19843,756
- 19793,591
- 19853,375
- 19783,168
- 19863,162
- 19882,978
- 19892,547
- 19872,277
- 19902,206
Null
Showing the 12 largest groups from 36 represented values.
- Park Name99,250
- National Historic Landmark Designated Date98,042
- Other Names53,898
- Official Record Url24,996
- Gis Source Date12,217
- Gis Source Scale11,331
- Gis Edit Date11,330
- Gis Source Accuracy11,329
- Longitude11,327
- Gis Map Method11,327
- Gis Resource Type11,327
- Latitude11,327
Property Type
- BUILDING69,280
- DISTRICT18,530
- SITE7,118
- STRUCTURE5,297
- OBJECT468
- NOT INDICATED100
Request Type
Showing the 12 largest groups from 14 represented values.
- Single69,782
- Multiple28,800
- Add.Doc.993
- Resubmission746
- Boundary294
- NHL88
- Resubmission|Single32
- Multiple|Single20
- Move17
- Multiple|Resubmission11
- Federal DOE4
- Add.Doc.|Single3
State Territory
Showing the 12 largest groups from 62 represented values.
- NEW YORK6,661
- MASSACHUSETTS4,521
- OHIO4,295
- PENNSYLVANIA3,655
- TEXAS3,596
- KENTUCKY3,574
- VIRGINIA3,480
- NORTH CAROLINA3,199
- CALIFORNIA3,117
- ARKANSAS2,896
- WISCONSIN2,682
- IOWA2,513
Status
- LISTED100,793
Records Information
Each record represents one unique National Register reference number. The 100,866-row NPS listed-properties snapshot contains 73 repeated reference-number rows tied to resubmission, boundary, or additional-documentation history; these are consolidated deterministically into 100,793 release records.
Designed for business research, directory applications, mapping, and market analysis. Review permitted uses.
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