Cities A–Z
Cities starting with “O”
514 of the 20,446 indexed cities begin with “O”, holding 23,890 IRS-credentialed preparer listings in total.
City index
O cities
Listed on this page: 514 city records for the letter “O”. Every count shown is taken from the pages linked here, which render the IRS PTIN holders public extract (FOIA) (irs.gov), data as of February 23, 2026.