Monday-Friday 8:00 a.m. to 4:30 p.m.; Saturday 8 a.m. to 12 p.m. The City of San Angelo also is home to the city hall. You can learn more about the city by visiting the San Angelo website. Please Note: Form W-9 forms are only available to U.S. citizens or legal residents, at the time of request. If the form is received after the deadline, it does not apply for review and/or processing. You will not be able to apply for Form W-9 for a later tax period. You cannot apply by mail — the W-9 form is available only electronically. If you are having problems submitting your W-9 form online at the link above in the United States on this page, please read these instructions. If you are not a U.S. citizen or are not a legal resident, then you will have to contact an IRS customer service representative about filing a U.S. tax return using W-9 Forms for a tax period for which an online tax return template was made available. You can download this form at the IRS Office in San Angelo, TX.