{"@context":{"@language":"en","@vocab":"https://schema.org/","arrayShape":"cr:arrayShape","citeAs":"cr:citeAs","column":"cr:column","conformsTo":"dct:conformsTo","containedIn":"cr:containedIn","cr":"http://mlcommons.org/croissant/","rai":"http://mlcommons.org/croissant/RAI/","data":{"@id":"cr:data","@type":"@json"},"dataType":{"@id":"cr:dataType","@type":"@vocab"},"dct":"http://purl.org/dc/terms/","description":{"@container":"@language"},"equivalentProperty":"cr:equivalentProperty","examples":{"@id":"cr:examples","@type":"@json"},"extract":"cr:extract","field":"cr:field","fileProperty":"cr:fileProperty","fileObject":"cr:fileObject","fileSet":"cr:fileSet","format":"cr:format","includes":"cr:includes","isArray":"cr:isArray","isLiveDataset":"cr:isLiveDataset","jsonPath":"cr:jsonPath","key":"cr:key","md5":"cr:md5","name":{"@container":"@language"},"parentField":"cr:parentField","path":"cr:path","recordSet":"cr:recordSet","references":"cr:references","regex":"cr:regex","repeated":"cr:repeated","replace":"cr:replace","samplingRate":"cr:samplingRate","sc":"https://schema.org/","separator":"cr:separator","source":"cr:source","subField":"cr:subField","transform":"cr:transform"},"@type":"sc:Dataset","conformsTo":"http://mlcommons.org/croissant/1.1","name":"Legal market crosswalks: practice areas, federal case codes, states, federal districts and counties","description":"The shared keys that join every Probative dataset. One record per practice area (our taxonomy of consumer and business practice areas, each linked to the FOLIO Area of Law class it matches, the federal nature-of-suit codes of its cases, the site's practice pages and the datasets that measure its demand, supply, rules and money), per federal nature-of-suit code, per state and territory (FIPS and postal codes, Census region and division, federal circuit and districts), per federal judicial district (our district key, the Federal Judicial Center code and the court's CM/ECF id), per county and county equivalent in the 50 states, DC and the territories (Puerto Rico's municipios and the county equivalents of Guam, the U.S. Virgin Islands, the Northern Mariana Islands, American Samoa and Midway: FIPS code, the federal district and statutory division it belongs to, its metro or micro area and its Census population), per former county code older sources still use (with the current counties that took its area), and per documented source code that names a place under another key (EEOC's WQ for Wake Island) or is not a place at all (military mail, the freely associated states, the VA's unplaced addresses, U.S. Courts' outside-the-U.S. code). Every county's district is read from the statute and checked against the counties U.S. Courts lists under each district in its bankruptcy Table F-5A.","url":"https://probativegrowth.com/data/crosswalks/","identifier":"https://doi.org/10.5281/zenodo.23744618","sameAs":["https://doi.org/10.5281/zenodo.23744618","https://doi.org/10.5281/zenodo.23741881","https://zenodo.org/records/23744618"],"version":"1.1.0","datePublished":"2026-10-28","dateModified":"2026-10-29","license":"https://creativecommons.org/licenses/by/4.0/","creator":{"@type":"sc:Organization","name":"Probative Growth","url":"https://probativegrowth.com"},"publisher":{"@type":"sc:Organization","name":"Probative Growth","url":"https://probativegrowth.com"},"citeAs":"Probative. (2026). Legal market crosswalks: practice areas, federal case codes, states, federal districts and counties (Version 1.1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.23744618","keywords":["legal practice area taxonomy","federal judicial districts by county","nature of suit codes","FIPS crosswalk","FOLIO legal ontology mapping","law firm market data"],"inLanguage":"en","isAccessibleForFree":true,"isLiveDataset":false,"temporalCoverage":"2026","spatialCoverage":{"@type":"sc:Place","name":"United States"},"distribution":[{"@type":"cr:FileObject","@id":"crosswalks.csv","name":"crosswalks.csv","description":"Every record, one row each (RFC 4180, UTF-8). Columns are described in README.txt.","contentUrl":"https://probativegrowth.com/data/v1/crosswalks/crosswalks.csv","contentSize":"2933330 B","encodingFormat":"text/csv","sha256":"ead782ee401761732b53af737a476d396f6b16086e8b81a9623efb8392bf5bd4"},{"@type":"cr:FileObject","@id":"crosswalks.json","name":"crosswalks.json","description":"Every record with its full sources, under a meta envelope (credit line, DOI, license).","contentUrl":"https://probativegrowth.com/data/v1/crosswalks/crosswalks.json","contentSize":"5492147 B","encodingFormat":"application/json","sha256":"b5f2b74ea6ac40492b39a7b1fcbb17e9ff01717bf7ba0542a17c297add1d02e1"}],"recordSet":[{"@type":"cr:RecordSet","@id":"crosswalks","name":"crosswalks","description":"The records of Legal market crosswalks: practice areas, federal case codes, states, federal districts and counties, one per CSV row.","key":{"@id":"crosswalks/id"},"field":[{"@type":"cr:Field","@id":"crosswalks/id","name":"id","description":"Stable record id (never reused)","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"id"}}},{"@type":"cr:Field","@id":"crosswalks/jurisdiction","name":"jurisdiction","description":"Two-letter state or territory code the record belongs to, or US for the national tables (practice areas, case codes, datasets, special keys)","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"jurisdiction"}}},{"@type":"cr:Field","@id":"crosswalks/table","name":"table","description":"STATE, DISTRICT, COUNTY, FORMER (a county code no longer current that older sources still use), ALIAS (another code a source uses for a place that has a key here), SPECIAL (a code a source uses that is not a U.S. place), PRACTICE, NOS (federal nature-of-suit code) or DATASET","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"table"}}},{"@type":"cr:Field","@id":"crosswalks/code","name":"code","description":"The record's key in its table: a postal code, a district key (CAC, NYS), a 5-digit county FIPS code, a source's alias or special code (WQ, OTHER), a practice-area id, a 3-digit nature-of-suit code or a dataset id","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"code"}}},{"@type":"cr:Field","@id":"crosswalks/name","name":"name","description":"Name in English","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"name"}}},{"@type":"cr:Field","@id":"crosswalks/nameEs","name":"nameEs","description":"Name in Spanish (county names are proper names and stay as the Census Bureau writes them)","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"nameEs"}}},{"@type":"cr:Field","@id":"crosswalks/status","name":"status","description":"P read from the primary source; S secondary: a nature-of-suit code no longer on the current U.S. Courts list (kept for older cases), a Virginia independent city placed by 28 U.S.C. 127(c) using the U.S. Courts county lists, or a former county code in a multi-district state placed by the district of its successors; D Probative's own classification (practice areas and dataset links)","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"status"}}},{"@type":"cr:Field","@id":"crosswalks/text","name":"text","description":"The record in one plain-English sentence","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"text"}}},{"@type":"cr:Field","@id":"crosswalks/value","name":"value","description":"STATE and COUNTY: residents on July 1, 2025 (Census estimate), or on April 1, 2020 (2020 Census) for Guam, the Virgin Islands, the Northern Mariana Islands and American Samoa, which have no annual estimates (the unit says which); empty for Midway, which the Census Bureau does not count; DISTRICT: residents of its counties; empty for the other tables","dataType":"sc:Integer","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"value"}}},{"@type":"cr:Field","@id":"crosswalks/unit","name":"unit","description":"Unit of value","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"unit"}}},{"@type":"cr:Field","@id":"crosswalks/fips","name":"fips","description":"STATE: the 2-digit state FIPS code","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"fips"}}},{"@type":"cr:Field","@id":"crosswalks/state","name":"state","description":"Postal code of the state the district or county is in","dataType":"sc:Text","source":{"fileObject":{"@id":"crosswalks.csv"},"extract":{"column":"state"}}},{"@type":"cr:Field","@id":"crosswalks/district","name":"district","description":"COUNTY and FORMER: the federal judicial district it belongs to, as a district key (the form the civil-filings, idb-civil and mdl datasets use); 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