{"openapi":"3.1.1","info":{"title":"USCIS naturalization and green card applications by field office: data API","version":"v1","summary":"Static, read-only JSON and CSV files. No key, no sign-up. CORS open.","description":"USCIS naturalization and green card applications by field office: Applications to U.S. Citizenship and Immigration Services for naturalization (Form N-400, general and military) and for a green card by adjustment of status (Form I-485, family, employment, humanitarian and other), received, approved, denied and pending at every USCIS field office and service centre, for each fiscal quarter USCIS has published, with the nationwide totals. Read cell for cell from the agency's quarterly performance workbooks and tied to its service-wide quarterly totals. USCIS prints D where disclosure standards are not met; those cells are left empty and marked suppressed, never estimated.\n\nProbative is a marketing firm, not a law firm; not legal advice. 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