4,000+ local service businesses in Boulder in our database, refreshed October 2026.
35% publish an email address — 1,400+ you can reach by cold email.
850 have no website listed and 4,000+ have no Google rating yet.
0% of rated businesses hold 4.5★ or better.
Area codes
(303)2,900+
(720)874
(970)33
(888)17
(800)17
(855)12
A few Boulder businesses
Humane Society of Boulder ValleyVeterinary & Pets
Goodbye Blue MondayMarketing Agencies
Ecos CommunicationsConsulting
ThinkIT SolutionsIT Services
corey sutton incSalons & Spas
Columbine Foot & Ankle Center PCMedical
MortgagemaxFinancial Services
Boulder Montessori SchoolChildcare & Education
Reaching out in the USB2B cold email is governed by CAN-SPAM: honest headers and subject lines, a physical address and an opt-out you honor. Phone outreach has its own rules, especially for cell phones. Read our CAN-SPAM guide and cold-calling rules before you start.