CallataGuides

Boulder, CO business phone guide

Population, businesses by sector and industry, area codes and local numbers for the Boulder, CO metro area.

Population
330,0002024 est.
Establishments
12,990CBP 2023
Counties
1
Area codes
3

About the Boulder, CO metro area

The Boulder, CO metro area covers 1 county in Colorado and had 330,000 residents in July 2024, down 0.2% since April 2020. The U.S. population grew 2.6% over the same period. By population it ranks 162nd of the 925 metro and micropolitan areas and 109th by business establishments.

Counties in the Boulder, CO area
CountyPopulation (2024)
Boulder County, CO330,262

Source: Census Vintage 2024 metropolitan and micropolitan area estimates.

Boulder, CO's business base

County Business Patterns counted 12,990 establishments in the area in 2023, employing 159,619 people in mid-March with $13.2 billion in annual payroll. That is an average of 12.3 employees per establishment. 62.0% of establishments with employees had fewer than five people. By establishment count, the largest sectors are professional, scientific, and technical services (2,957), health care and social assistance (1,646), and retail trade (1,139).

Boulder, CO establishments by sector, 2023
Sector (NAICS)EstablishmentsEmployeesAnnual payroll
Professional, Scientific, and Technical Services (54)2,95726,246$3,204,246,000
Health Care and Social Assistance (62)1,64621,175$1,380,180,000
Retail Trade (44)1,13918,250$805,278,000
Other Services (except Public Administration) (81)1,0596,659$324,297,000
Accommodation and Food Services (72)92917,916$518,287,000
Real Estate and Rental and Leasing (53)9022,766$182,595,000
Construction (23)8245,574$408,232,000
Finance and Insurance (52)7113,802$441,987,000
Administrative and Support and Waste Management and Remediation Services (56)5746,591$348,016,000
Manufacturing (31)51016,153$1,365,021,000
Wholesale Trade (42)4627,732$1,005,322,000
Information (51)37313,787$2,470,354,000
Arts, Entertainment, and Recreation (71)3503,458$103,841,000
Educational Services (61)3353,959$189,877,000
Transportation and Warehousing (48)991,833$93,842,000
Management of Companies and Enterprises (55)483,215$333,218,000
Utilities (22)22244$29,167,000
Agriculture, Forestry, Fishing and Hunting (11)20122$5,818,000
Mining, Quarrying, and Oil and Gas Extraction (21)19123$8,465,000

Source: Census County Business Patterns 2023, two-digit NAICS sectors. Manufacturing, retail and transportation span several two-digit codes; CBP reports them under 31, 44 and 48.

Business density and team size in Boulder, CO

Boulder, CO has 39.3 business establishments per 1,000 residents, 60.0% above the U.S. figure of 24.6. Establishments average 12.3 employees against 16.7 nationally, and payroll per employee is $82,814 (21.2% above the U.S. $68,342). 62.0% of establishments with employees have fewer than five people (U.S.: 55.5%), while 4.2% have 50 or more. Most establishments are far smaller than the average suggests, so it pays to price a phone plan at the headcount you actually have rather than the average.

Boulder, CO: establishments by employment size, 2023
Employment sizeEstablishmentsShareU.S. share
1–4 employees8,05862.0%55.5%
5–9 employees1,96515.1%17.5%
10–19 employees1,40910.8%12.5%
20–49 employees1,0087.8%9.1%
50 or more employees5504.2%5.4%

Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.

Small-business industries in Boulder, CO

Of the 141 industries these guides cover, 131 have a published Census count in Boulder, CO. The largest are offices of real estate agents and brokers (488), management consulting firms (379), and full-service restaurants (359). Relative to population, mental health practices are the most over-represented: 76.9 per 100,000 residents against 13.7 nationally.

Largest covered industries in Boulder, CO, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Offices of real estate agents and brokers4886451.3
Management consulting firms3791,1733.1
Full-service restaurants3598,00022.3
Custom computer programming services firms3542,7537.8
Law offices2871,2404.3
Limited-service restaurants2775,21518.8
Mental health practices2545482.2
Dental offices2491,5306.1
Physician practices2352,42410.3
Marketing consulting firms2239944.5
Engineering services firms2103,24415.4
Residential remodelers1926623.4
Landscaping services1699795.8
Computer systems design services firms168——
Beauty salons1547905.1
Insurance agencies and brokerages1525283.5
Offices of certified public accountants1175224.5
Residential property managers1085314.9
Architectural services firms1065465.2
Physical, occupational and speech therapy clinics1055575.3
Chiropractic offices1022512.5
Plumbing, heating and air-conditioning contractors951,09311.5
General automotive repair shops925055.5
Janitorial services907198.0
Fitness and recreational sports centers871,50017.2

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Phone numbers in the Boulder, CO area

The area's named cities and towns have 64 NANPA-assigned exchanges across 3 area codes; 720 has the most (61%). A local number in the code your customers know is the simplest signal that you are nearby; Callata's plan includes up to 3.

Area codes in the Boulder, CO area
Area codeExchanges in named placesShareTime zone
7203961%Mountain
3031828%Mountain
983711%Mountain

Exchanges in rate centers matched to Census places in the area. Source: NANPA.

Local numbers by city

Pages for 1 cities and towns in the area list their area codes, prefixes and carriers.

Cities and towns in the Boulder, CO area
PlacePopulation (2024)Area codesExchanges
Longmont, CO99,818303, 720, 98364

Phone costs for a typical Boulder, CO business

The comparison below uses 12 users, the rounded average establishment size in Boulder, CO. At list prices checked September 28, 2026, that is $299.40 a month on Ooma Office Pro and $360.00 on RingCentral RingEX Core. On Callata the same 12 people cost $239.00 a month, less than either per-seat plan.

Monthly list price for a 12-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$239.00$2,868.00
Quo (Starter)$19.00 per user$228.00$2,736.00
Nextiva (Core)$23.00 per user$276.00$3,312.00
Ooma (Office Pro)$24.95 per user$299.40$3,592.80
Dialpad (Standard)$27.00 per user$324.00$3,888.00
RingCentral (RingEX Core)$30.00 per user$360.00$4,320.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Callata in Boulder, CO

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in Boulder, CO, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Frequently asked questions

What area codes serve Boulder, CO?

720, 303, and 983, by NANPA-assigned exchanges in the area's named places.

How many businesses are in the Boulder, CO area?

12,990 establishments in 2023, according to Census County Business Patterns.

How much does a business phone system cost in Boulder, CO?

Callata is $99 a month with 5 users included, then $20 per additional user; for a 12-person team that is $239.00 a month. The same team on Ooma Office Pro lists at $299.40 a month (checked September 28, 2026).