Email is the best way to get in touch, especially for urgent matters.

holler@citizenmath.com

Phone calls are answered and voicemails returned Monday-Friday. Be sure to leave a message if you'd like a call back.

530.420.5474

We prefer to receive POs via email -- and even if you fax, we're going to receive it via email -- but our fax number is below if you must.

866.411.8185

Drop us a line, mail us a check, or use this complete address for your records:

Mathalicious (d.b.a. Citizen Math)
750 N Saint Paul St Ste 250
PMB 84300
Dallas, TX 75201 - 3206