V O L . X X X I I N O. X I X
90
Fact Book / Doing Business in Maine
I N N OVAT I O N / R & D
Maine's largest chambers of commerce
Ranked by number of members
C O M P I L E D B Y S T E P H A N I E R . M E A G H E R C O M P I L E D B Y S T E P H A N I E R . M E A G H E R
1 From 2025 survey 2 From 2024 survey 3 Also known as Acadia Chamber of Commerce
S O U R C E : Each chamber via survey.
See full versions of lists
with company profiles at
mainebiz.biz/datacenter
@
Maine's largest chambers of commerce
Ranked by number of members
Members Population served Employees Chief executive Year founded
1
Maine State Chamber of Commerce
128 State St., Suite 101, Augusta 04330
623-4568 • mainechamber.org
5,000 1,372,000 11
Patrick Woodcock
president & CEO
1889
2
Portland Regional Chamber of Commerce
93 Exchange St., Portland 04101
772-2811 • portlandregion.com
1,429 260,000 6
Quincy Hentzel
CEO
1854
3
Bangor Region Chamber of Commerce
2 Hammond St., Suite One, Bangor 04401
947-0307 • bangorregion.com
715 120,000 5
Deb Neuman
president & CEO
1911
4
Kennebec Valley Chamber of Commerce
105 Second St., Suite 1B, Hallowell 04347
623-4559 • kennebecvalleychamber.com
710 86,920 6
Katie Doherty
president & CEO
1932
5
Kennebunk-Kennebunkport-Arundel Chamber of Commerce
16 Water St., Kennebunk 04043
967-0857 • gokennebunks.com
660 20,000 3.5
Laura Dolce
executive director
1942
6
Mid-Maine Chamber of Commerce Inc.
50 Elm St., Waterville 04901
873-3315 • midmainechamber.com
656 72,342 5
Kimberly Lindlof
president & CEO
1912
7
Ellsworth Area Chamber of Commerce
151 High St., Suite 6, Ellsworth 04605
667-5584 • ellsworthchamber.org
500 56,000 2
Heather Seavey
executive director
1956
7
Lewiston Auburn Metropolitan Chamber of Commerce Foundation
415 Lisbon St., Suite 100, Lewiston 04240
783-2249 • lametrochamber.com
500 115,272 9
Susan Ruhlin
president & CEO
1887
9
York Region Chamber of Commerce
1 Stonewall Lane, York 03909
363-4422 • yorkme.org
454 41,704 3
Holly Roberts
executive director
1898
10
Belfast Area Chamber of Commerce
33 Main St., Belfast 04915
338-5900 • belfastmaine.org
425 70,000 2.5
Dorothy Havey
president & CEO
1960
11
Biddeford+Saco Chamber of Commerce
28 Water St., Suite 1, Biddeford 04005
282-1567 • biddefordsacochamber.org
400 50,000 1
Alex MacPhail
executive director
1927
11
Central Aroostook Chamber of Commerce
3 Houlton Road, Presque Isle 04769
764-6561 • centralaroostookchamber.com
400 27,000 2
LaNiece Sirois
executive director
1945
13
Bath Brunswick Topsham Regional Chamber
2 Pegasus St., Suite 2, Brunswick 04011
725-8797 • midcoastmaine.com
385
1
64,000
1
2
1
Cory R. King
executive director
1994
14
Bar Harbor Chamber of Commerce
93 Cottage St., Bar Harbor 04609
288-5103 • visitbarharbor.com
376 10,000 6
Everal Eaton
executive director
1969
15
Ogunquit Chamber of Commerce
20 Shore Road, Ogunquit 03907
646-2939 • ogunquit.org
325 15,000 3
Angela Blouin
executive director
1966
16
Sebago Lakes Region Chamber of Commerce
909 Roosevelt Trail, Suite A, Windham 04062
892-8265 • sebagolakeschamber.com
300
2
58,000
2
2
2
Amber Rankine
president & CEO
1964
17
Boothbay Harbor Region Chamber of Commerce
192 Townsend Ave., Boothbay Harbor 04538
633-2353 • boothbayharbor.com
265 35,000 8
Lisa Walby
director
1964
18
Wells Chamber of Commerce
P.O. Box 356, Wells 04090
646-2451 • wellschamber.org
250 12,000 7
Eleanor Vadenais
president & CEO
1958
19
Sanford-Springvale Chamber of Commerce
510 Main St., Springvale 04083
324-4280 • sanfordchamber.org
225 22,000 1
Cari Quater
president & executive director
1954
20
Franklin County Chamber of Commerce
615 Wilton Road, Suite 1, Farmington 04938
779-4215 • franklincounty.me
220 31,000 1
JP Fortier
executive director
1994
21
Old Orchard Beach Chamber of Commerce
11 First St., Old Orchard Beach 04064
934-2500 • oldorchardbeachmaine.com
216 75,000 3
Kim Howard
executive director
1949
22
Greater Houlton Chamber of Commerce
109 Main St., Houlton 04730
694-3414 • greaterhoulton.com
189 10,000 1
Jane Reed Torres
executive director
1914
23
Southwest Harbor & Tremont Chamber of Commerce
3
P.O. Box 1143, Southwest Harbor 04679
244-9264 • acadiachamber.com
175 4,000 1
Jeff Prentice
vice president
Holly Masterson
board president
1924
SOURCE: Each chamber via survey.
1 From 2025 survey
2 From 2024 survey
3 Also known as Acadia Chamber of Commerce
- This list was compiled by Stephanie R. Meagher and published in Mainebiz's Fact Book: Doing Business in Maine, Aug. 31, 2026.
