# States W1 Coverage map: state_coverage_block_v1

`medicare_silver.state_coverage_block_v1` · State programs · status partial · 330,720 rows

State product W1 (Coverage map) of the States lane: coverage by source (employer, Medicare, Medicaid, Marketplace, uninsured) by county and age band, from Census tables. One row per state x county x estimate year x coverage block x age band; members over population_universe is the share. additive_to_population = false blocks overlap (dual coverage) and must not be summed. 10 state(s): CA FL GA IL MI NC NY OH PA TX.

**Grain.** Coverage by source (employer, Medicare, Medicaid, Marketplace, uninsured) by county and age band, from Census tables. 330,720 rows (Athena, 2026-10-29). Period 2019 to 2024 (estimate_year).

| column | type | meaning |
|---|---|---|
| state_code | string |  |
| county_fips | string |  |
| estimate_year | int |  |
| coverage_block | string |  |
| age_band | string |  |
| members | int |  |
| population_universe | string |  |
| source_sha256 | string |  |
| source_url | string |  |
| locator | string |  |
| source_cell_ids | string |  |
| additive_to_population | boolean |  |
| canonical_entity_id | string |  |
| canonical_parent_id | string |  |
| parent_status | string |  |
| row_key | string |  |

Query it: `query_substrate` with `SELECT ... FROM medicare_silver.state_coverage_block_v1 WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.state_coverage_block_v1")` first.