SEC county json download citation links:
https://www.sec.gov/files/county.json?download https://www.sec.gov/files/county.json?download=1 https://www.sec.gov/files/county.json?download=yes https://www.sec.gov/files/county.json https://www.sec.gov/files/county.json?download https://www.sec.gov/files/county.json?download