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republic-os/data/jurisdictions/us/states/wa/districts/01.md
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Fabio 1beeaab2db Graph: national county↔district↔legislator authority layer
The first edges in the repo. Every US county now links to the districts it
sits in, weighted by area overlap, and every legislator links to the district
they represent — county → district → representative, traversable.

Data (PostGIS, no Atlas dependency — computed directly from geometry):
- data/county_district_edges.jsonl — 16,328 weighted edges. area_weight =
  ST_Area(ST_Intersection(county, district))/ST_Area(county) over ST_MakeValid
  Census TIGER 2024 geometries, overlaps <0.5% dropped. Uses area-intersection,
  NOT centroid-in-polygon, so urban districts that carve through counties
  (e.g. GA CD-5 / Atlanta across Clayton+DeKalb+Fulton) are captured, not
  silently dropped. Per-county weights sum to ~1.0 per district type.

build.py:
- ~6,896 new district nodes: 435 CD (ACS demographics where available; sparse
  for the 8 states missing from acs_cd) + 4,927 state-house + 1,897 state-senate
  (geometry-only). GEOID/number-keyed, stable.
- county index.md gains a `districts:` block (frontmatter) + a ## Districts
  section (body links, so link-integrity checks them).
- legislators + US House members gain `represents:` pointing at their district
  node; edge stored once on the person, inverse left to the view.
- schemas/jurisdiction: classification enum + chamber/districts fields.

Honest gaps (logged, not hidden): ID + NH have no state-house geometry, so
their house districts get nodes (represents resolves) but no county edges;
CD nodes for acs_cd-missing states are demographically sparse.

Deterministic (byte-identical rebuild); validate.py passes 26,617 records,
link-integrity clean (every district/represents link resolves).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-04 22:28:08 -04:00

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---
type: Jurisdiction
title: "WA-01"
classification: congressional-district
state: "WA"
district: "WA-01"
demographics:
population: 810553
population_under_18: 188829
population_18_64: 320977
population_65_plus: 300747
median_household_income: 131159
poverty_rate: 6.71
homeownership_rate: 60.81
unemployment_rate: 3.98
median_home_value: 871500
gini_index: 0.4718
vacancy_rate: 4.1
race_white: 463500
race_black: 21430
race_asian: 197849
hispanic: 79433
bachelors_plus: 315490
sources:
- field: demographics
source: "Census ACS 2023"
confidence: official
tags: [jurisdiction, congressional-district, wa]
timestamp: "2026-07-03"
---
# WA-01
Congressional district WA-01.
## Demographics (ACS 2023)
| Measure | Value |
| --- | --- |
| Population | 810553 |
| Under 18 | 188829 |
| 1864 | 320977 |
| 65+ | 300747 |
| Median household income | 131159 |
| Poverty rate | 6.71 |
| Homeownership rate | 60.81 |
| Unemployment rate | 3.98 |
| Median home value | 871500 |
| Gini index | 0.4718 |
| Vacancy rate | 4.1 |
| White | 463500 |
| Black | 21430 |
| Asian | 197849 |
| Hispanic/Latino | 79433 |
| Bachelor's or higher | 315490 |
## Source
- demographics: Census ACS 2023