Research and data
Studies built from the state licensing board's rosters and federal data. Each names its sources and method and comes with its table as a CSV.
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Texas counties without a surveying firm
102 of Texas's 254 counties have no registered surveying firm office. Every county with its population, firm offices and offices per 100,000 residents.
Read the study CSVData as of
Every study names its sources and method and links a CSV of its table. The data is free to reuse under CC BY 4.0 with a credit and a link to the study. Each study page has a "How to cite this" line. Questions: editor@surveyornear.com.