AxiomCodex/axiom-lehd-workplace-jobs-sample-25k

Axiom LEHD Workplace Jobs (WAC) (25K Sample)

Readiness Status

Public research dataset of upstream open data; see license and attribution below; no commercial or training authorization is implied.

Summary

A 25,000-row sample of U.S. Census Bureau LODES8 Workplace Area Characteristics (WAC). Each row is one census block that had jobs in the reference year. It gives total jobs and the published breakdowns by worker age, monthly earnings band, and the 20 NAICS industry sectors.

This sample covers LODES year 2023 in six states: California, Florida, Illinois, New York, Texas, and Washington. Each state contributes a near-equal share of rows. Census block geocodes join directly to other Census geography and to H3 or tract rollups.

About Axiom Codex

Axiom Codex is the governed public-data catalog maintained by Axiomancer Labs (www.axiomcodex.io). Every Axiom Codex sample is normalized to a published schema and filtered to sources whose redistribution terms are recorded in the Codex source registry. It ships with machine-readable quality evidence (quality.json, baseline.json) and a manifest that binds each file to its upstream release.

Full data

This sample is a preview. The complete California 2023 WAC package (262,357 workplace-block records) is a separate public non-commercial research release: Axiom LEHD Workplace Jobs — California 2023. National 2023 coverage, per-year packages for 2002–2022, and one consolidated 2002–2023 collection (48,592,172 rows across 22 annual vintages, bundling the same per-year packages) are part of Axiom Codex Commercial All-access, delivered on request after purchase. See the Axiom Codex catalog. This sample grants no commercial rights.

Quick Start

from datasets import load_dataset

ds = load_dataset("AxiomCodex/axiom-lehd-workplace-jobs-sample-25k", split="train")
df = ds.to_pandas()
print(df.groupby("state")["total_jobs"].sum())

Schema

The columns follow the Workplace Area Characteristics projection. They do not follow the origin-destination flow schema in the Axiom Codex LEHD v1.0.0 specification (see Coverage & Caveats).

Column	Type	Description
acl_tier	string	Access control tier
ingested_at	timestamp	Ingestion timestamp
jobs_age_mid	integer	Jobs held by workers age 30 to 54
jobs_age_senior	integer	Jobs held by workers age 55 or older
jobs_age_young	integer	Jobs held by workers age 29 or younger
jobs_earn_high	integer	Jobs with earnings > $3,333/month
jobs_earn_low	integer	Jobs with earnings <= $1,250/month
jobs_earn_mid	integer	Jobs with earnings $1,251-$3,333/month
jobs_naics_agriculture	integer	Agriculture, forestry, fishing, and hunting jobs
jobs_naics_mining	integer	Mining, quarrying, and oil and gas extraction jobs
jobs_naics_utilities	integer	Utilities jobs
jobs_naics_construction	integer	Construction jobs
jobs_naics_manufacturing	integer	Manufacturing jobs
jobs_naics_wholesale_trade	integer	Wholesale trade jobs
jobs_naics_retail_trade	integer	Retail trade jobs
jobs_naics_transportation_warehousing	integer	Transportation and warehousing jobs
jobs_naics_information	integer	Information jobs
jobs_naics_finance_insurance	integer	Finance and insurance jobs
jobs_naics_real_estate_rental	integer	Real estate and rental and leasing jobs
jobs_naics_professional_scientific_technical	integer	Professional, scientific, and technical services jobs
jobs_naics_management_companies	integer	Management of companies and enterprises jobs
jobs_naics_administrative_waste_services	integer	Administrative, support, and waste services jobs
jobs_naics_educational_services	integer	Educational services jobs
jobs_naics_healthcare_social_assistance	integer	Health care and social assistance jobs
jobs_naics_arts_entertainment_recreation	integer	Arts, entertainment, and recreation jobs
jobs_naics_accommodation_food_services	integer	Accommodation and food services jobs
jobs_naics_other_services	integer	Other services jobs
jobs_naics_public_administration	integer	Public administration jobs
modified_at	timestamp	Last modification timestamp
normalization_version	string	Normalization standard version
occurred_at	timestamp	Event timestamp (annual baseline)
record_id	string	Stable identifier from state, LODES year, and workplace geocode
source_feed	string	Governed Census WAC source identity
schema_version	string	Schema version
source_system	string	Source system
source_uri	string	Source URL
state	string	US State abbreviation
total_jobs	integer	Total jobs
w_geocode	string	Workplace census block geocode (15-digit GEOID)
year	integer	LODES vintage year

Sampling

25,000 rows sampled deterministically in two steps. First, the collector takes an equal quota of blocks from each state, ranked by a SHA-256 hash of state, year, and block geocode. Then the exporter keeps 25,000 of those rows, ranked by a SHA-256 hash of record_id, so each state contributes a near-equal share. Rebuilding from the same LODES files gives the same sample. The sample is not weighted by job count: most blocks have only a few jobs, and a small number of blocks hold most employment.

Demo Quality Contract

This is a source_records artifact under the Axiom Codex demo quality standard (DEMO_QUALITY_STANDARD.md) lehd-workplace-jobs profile. A successful transport export is not a quality-pass claim: staging must emit quality.json and baseline.json with every critical gate passing, and the documented APRS-backfill limitation remains explicit.

Coverage & Caveats

• WAC, not commuter flows. The Axiom Codex LEHD v1.0.0 specification describes origin-destination commuter flows. This sample is Workplace Area Characteristics instead: jobs by census block, NAICS sector, age, and earnings band.
• Census noise infusion. Census applies noise infusion and other disclosure protections to LODES. Small block-level counts are approximate, so aggregate to tract, county, or H3 cells before drawing conclusions.
• Partial geography. The sample covers six states and one year. It is not a national panel.

Provenance & Source Licensing

The source registry identifies Census LODES WAC as LicenseRef-US-Gov-Public-Domain and permits research-tier redistribution with Census attribution. The Hugging Face other license metadata names that upstream public-domain posture; it does not grant additional rights or replace the required source citation. Cite Census as the source of original data only; conclusions drawn from analysis remain the performing party's responsibility.

Known Redactions / Exclusions

No field-level redactions are applied to published WAC counts. The sample contains Census block geocodes and no more precise geography. LODES contains no person-level records.

Record identity is carried by record_id, derived from the WAC year, state, and workplace geocode.

ML Split

Not an ML train/test split: This dataset is provided as a single train split purely for HuggingFace dataset tooling compatibility.

Citation

Suggested attribution: U.S. Census Bureau, Longitudinal Employer-Household Dynamics (LEHD), LEHD Origin-Destination Employment Statistics (LODES), Workplace Area Characteristics (WAC), LODES8, Release Format Version 8.4, data vintage 20251202_1657; source file pattern {state}_wac_S000_JT00_{year}.csv.gz; accessed 2026-10-07. Cite Census as the source of original data only; conclusions drawn from analysis remain the performing party's responsibility.

Contact

Maintained by Axiomancer Labs as part of Axiom Codex. For questions, corrections, or removal requests, open a discussion in this repository's Community tab or reach us through www.axiomcodex.io.

Governed Dataset Card Metadata

• Source / license posture: Census LODES WAC (census-lodes-wac, U.S. Government public domain) is cleared for research redistribution with the suggested Census citation; every row maps to census-lodes-wac. Census LODES origin-destination files are not included.
• Intended use: Research, exploration, and evaluation of workplace-area employment by census block, industry, age, and earnings band.
• Forbidden use: No person-level or re-identification inference, no employment or credit decisioning about individuals, and no representation of these counts as exact (Census applies noise infusion).
• Known missingness / bias: WAC is not origin-destination flow data; the sample is bounded by state and release year, is unweighted by job count, and small block counts are noise-infused.
• Update cadence: Static sample of one LODES release; newer Census vintages are not reflected.
• Geographic / temporal coverage: Workplace-area geography at Census block level; occurred_at is the LODES year anchor.
• Label semantics: No governed task labels or isolated evaluation split.
• Confidence / provenance method: source_feed is the source-balance field; file payload receipts bind the source vintage; no calibrated confidence is declared.
• Training policy: Not authorized for training under the Axiom Codex governed training-use policy; reuse rights come only from the upstream terms, and the single train split is a Hub convention, not an ML split.

Release Scope & Quality Evidence

• Scope: source_records; 25000 staged rows from upstream collector Parquet inputs.
• Observed time window: 2023-01-01T00:00:00Z to 2023-01-01T00:00:00Z.
• Machine-readable evidence: manifest.json, quality.json, and baseline.json.
• Packaging validation command: python3 tools/hf_packaging/validate.py --staged <staged-dir> --dataset lehd-workplace-jobs --release-candidate --tier research. This records the build's validation entry point and requires the Axiom Codex packaging environment, which is not included in this Hugging Face data repository. Use the quickstart above to load the data. This card does not claim a model baseline or an ML split unless a future task/evaluation configuration supplies one.
• Promotion: a release candidate requires the snapshot-bound quality report, baseline, current source-policy replay, and all applicable thresholds; blocked or unknown gates remain blocked.