CallataGuidesMonroe, MI business phone guide
Population, businesses by sector and industry, area codes and local numbers for the Monroe, MI metro area.
- Population
- 156,0002024 est.
- Establishments
- 2,395CBP 2023
- Counties
- 1
- Area codes
- 1
About the Monroe, MI metro area
The Monroe, MI metro area covers 1 county in Michigan and had 156,000 residents in July 2024, up 0.8% since April 2020. The U.S. population grew 2.6% over the same period. By population it ranks 286th of the 925 metro and micropolitan areas and 378th by business establishments.
| County | Population (2024) |
|---|---|
| Monroe County, MI | 156,045 |
Source: Census Vintage 2024 metropolitan and micropolitan area estimates.
Monroe, MI's business base
County Business Patterns counted 2,395 establishments in the area in 2023, employing 37,143 people in mid-March with $2.0 billion in annual payroll. That is an average of 15.5 employees per establishment. 48.9% of establishments with employees had fewer than five people. By establishment count, the largest sectors are retail trade (376), health care and social assistance (300), and accommodation and food services (278).
| Sector (NAICS) | Establishments | Employees | Annual payroll |
|---|---|---|---|
| Retail Trade (44) | 376 | 5,636 | $200,365,000 |
| Health Care and Social Assistance (62) | 300 | 4,547 | $239,702,000 |
| Accommodation and Food Services (72) | 278 | 4,653 | $85,939,000 |
| Construction (23) | 271 | 1,974 | $147,482,000 |
| Other Services (except Public Administration) (81) | 249 | 1,473 | $45,440,000 |
| Professional, Scientific, and Technical Services (54) | 155 | 1,367 | $111,709,000 |
| Manufacturing (31) | 130 | 7,297 | $476,198,000 |
| Finance and Insurance (52) | 127 | 610 | $41,201,000 |
| Administrative and Support and Waste Management and Remediation Services (56) | 123 | 2,005 | $84,269,000 |
| Transportation and Warehousing (48) | 104 | 2,162 | $123,185,000 |
| Wholesale Trade (42) | 81 | 2,070 | $133,453,000 |
| Real Estate and Rental and Leasing (53) | 75 | 278 | $13,185,000 |
| Arts, Entertainment, and Recreation (71) | 51 | 360 | $11,031,000 |
| Information (51) | 31 | 246 (high noise) | $12,993,000 |
| Educational Services (61) | 20 | 248 | $6,891,000 |
| Management of Companies and Enterprises (55) | 10 | 860 | $79,121,000 |
| Utilities (22) | 7 | 1,311 (high noise) | $177,476,000 |
| Agriculture, Forestry, Fishing and Hunting (11) | 4 | 11 | $293,000 |
| Mining, Quarrying, and Oil and Gas Extraction (21) | 3 | 35 | $7,635,000 |
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 Monroe, MI
Monroe, MI has 15.3 business establishments per 1,000 residents, 37.6% below the U.S. figure of 24.6. Establishments average 15.5 employees against 16.7 nationally, and payroll per employee is $53,780 (21.3% below the U.S. $68,342). 48.9% of establishments with employees have fewer than five people (U.S.: 55.5%), while 6.1% have 50 or more. Averages are pulled up by large employers; the size table is the better guide to what a typical business here looks like.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 1,171 | 48.9% | 55.5% |
| 5–9 employees | 511 | 21.4% | 17.5% |
| 10–19 employees | 334 | 14.0% | 12.5% |
| 20–49 employees | 232 | 9.7% | 9.1% |
| 50 or more employees | 145 | 6.1% | 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 Monroe, MI
Of the 141 industries these guides cover, 92 have a published Census count in Monroe, MI. The largest are limited-service restaurants (103), full-service restaurants (87), and physician practices (77). Relative to population, marinas are the most over-represented: 6.4 per 100,000 residents against 1.1 nationally.
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Phone numbers in the Monroe, MI area
The area's named cities and towns have 92 NANPA-assigned exchanges across 1 area code; 734 has the most (100%). Callata includes up to 3 local numbers, so a business serving several parts of the area can hold a number in each.
| Area code | Exchanges in named places | Share | Time zone |
|---|---|---|---|
| 734 | 92 | 100% | Eastern |
Exchanges in rate centers matched to Census places in the area. Source: NANPA.
Local numbers by city
Pages for 6 cities and towns in the area list their area codes, prefixes and carriers.
| Place | Population (2024) | Area codes | Exchanges |
|---|---|---|---|
| Monroe, MI | 20,177 | 734 | 40 |
| Dundee, MI | 8,785 | 734 | 9 |
| Ida, MI | 4,815 | 734 | 12 |
| Erie, MI | 4,353 | 734 | 9 |
| Carleton, MI | 2,302 | 734 | 8 |
| Petersburg, MI | 1,162 | 734 | 2 |
Phone costs for a typical Monroe, MI business
The comparison below uses 16 users, the rounded average establishment size in Monroe, MI. At list prices checked September 28, 2026, that is $399.20 a month on Ooma Office Pro and $480.00 on RingCentral RingEX Core. Callata comes to $319.00 a month for 16 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $319.00 | $3,828.00 |
| Quo (Starter) | $19.00 per user | $304.00 | $3,648.00 |
| Nextiva (Core) | $23.00 per user | $368.00 | $4,416.00 |
| Ooma (Office Pro) | $24.95 per user | $399.20 | $4,790.40 |
| Dialpad (Standard) | $27.00 per user | $432.00 | $5,184.00 |
| RingCentral (RingEX Core) | $30.00 per user | $480.00 | $5,760.00 |
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 Monroe, MI
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
Porting a number you already use in Monroe, MI is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
Frequently asked questions
What area codes serve Monroe, MI?
734, by NANPA-assigned exchanges in the area's named places.
How many businesses are in the Monroe, MI area?
2,395 establishments in 2023, according to Census County Business Patterns.
How much does a business phone system cost in Monroe, MI?
Callata is $99 a month with 5 users included, then $20 per additional user; for a 16-person team that is $319.00 a month. The same team on Ooma Office Pro lists at $399.20 a month (checked September 28, 2026).