> ## Documentation Index
> Fetch the complete documentation index at: https://docs.buyparceldata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Coverage

> Nationwide parcel coverage stats and how BPD sources its data.

## Overview

BPD covers **every county in the United States**. The dataset is sourced directly from county assessors and recorder offices, not inferred, estimated, or aggregated from third parties.

| Metric                  | Coverage      |
| ----------------------- | ------------- |
| Total parcels           | \~160 million |
| US land area            | \~100%        |
| US population           | \~100%        |
| Owners with records     | \~116 million |
| Owner mailing addresses | \~98 million  |

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## Why counts differ from competitors

BPD retains all parcel records, including ones with sparse data. Some competitors remove parcels that don't meet a minimum field threshold, which artificially reduces their counts. A null field in BPD means the county didn't provide that data, not that the parcel doesn't exist.

See [Data fields](/guides/data-fields) for more on how null values work.

***

## Data sourcing

All data is obtained directly from county assessors, recorder offices, and GIS departments. BPD does not infer or derive parcel attributes. If a county doesn't publish a field, it will be null in the API response rather than estimated.

This approach ensures accuracy but means coverage completeness is dependent on each county's data publishing practices.

***

## Frequently asked questions

**Is the API really nationwide?**
Yes. The API covers all US states and territories for which county data is publicly available. You do not need to specify a state or region; you can query any location in the US with the same endpoints.

**Is coverage truly nationwide?**
Yes. As of April 2026, BPD covers all 50 states and territories across 3,200+ counties.

**Can I get county-by-county coverage details?**
Yes. Contact [support@buyparceldata.com](mailto:support@buyparceldata.com) and we can share a coverage breakdown for the specific counties relevant to your use case.