Frederick County, Maryland Businesses

O' Donnell Plumbing Service - Frederick, MD

Plumbing Contractors Referral Services

33 E Patrick St

Frederick - MD

(301) 831-4332
O'Brien Custom Painting - Emmitsburg, MD

Paving Contractors & Construction

Emmitsburg - MD

(240) 307-2360
O'brien Michael J - Mount Airy, MD

Veterinarians

806 Park Ave

Mount Airy - MD

(301) 831-7639
O'brien Thomas A - Emmitsburg, MD

Painting Contractors

9234 Waynesboro Pike

Emmitsburg - MD

(301) 447-6282
O'brien's Fire Protection - Middletown, MD

Fire Extinguishers

8719 Pete Wiles Rd

Middletown - MD

(301) 371-8545
O'connell Jeanne - Frederick, MD

Physicians & Surgeons

182 Thomas Johnson Dr

Frederick - MD

(301) 668-0002
O'connor Patricia Lawyer - Frederick, MD

Attorneys

129 W Patrick St

Frederick - MD

(301) 663-8633
O'Connor Plumbing - Frederick, MD

Plumbers - Information & Referral Services

8435 Progress Drive, Unit CC

Frederick - MD

(301) 540-5050
O'donnell Nancy - Frederick, MD

Physical Therapists

700 Montclaire Ave

Frederick - MD

(301) 662-1312
O'Hair Salon & Spa - Frederick, MD

Beauty Salons

6 E Church St

Frederick - MD

(301) 698-0800
O'Leary Asphalt - Ijamsville, MD

Paving Contractors & Construction

9629 Doctor Perry Rd

Ijamsville - MD

(301) 948-0010
O'leary Asphalt - Ijamsville, MD

Paving Contractors & Construction

9629 Doctor Perry Rd

Ijamsville - MD

(301) 874-6923
O'leary's Emporium - Emmitsburg, MD

Firefighting Equipment & Supplies

16825 S Seton Ave

Emmitsburg - MD

(301) 447-2795
Oak Contracting - Frederick, MD

Builders & Contractors

1001 Motter Ave

Frederick - MD

(301) 378-0319
Oak Contracting - Ijamsville, MD

Building Construction Consultants

3011 Sunflower Dr

Ijamsville - MD

(301) 865-3422
Oak Hill Properties - New Market, MD

Residential Construction Contractors

314 Nicholas Hall St

New Market - MD

(540) 338-0159
Oak Tree Building Group - Frederick, MD

Masonry & Bricklaying Contractors

5711 Industry Ln

Frederick - MD

(301) 663-3999
Oak Tree Inn - Brunswick, MD

Hotels & Motels

620 Souder Rd

Brunswick - MD

(301) 969-6131
Oak Tree Landscaping - Mount Airy, MD

Landscape Contractors & Designers

Mount Airy - MD

(301) 829-8970
Oakdale High School - Ijamsville, MD

Elementary Schools

5850 Eaglehead Dr

Ijamsville - MD

(301) 865-3192
Oakes Kevin S Dds - Frederick, MD

Dentists

196 Thomas Johnson Dr Ste 130

Frederick - MD

(301) 663-5817
Oaktree Liquors - Frederick, MD

Liquor & Alcohol Stores

1313 W Patrick St

Frederick - MD

(301) 378-8620
Oao Mohn and Allen Pc - Frederick, MD

Public Accountants

Frederick - MD

(240) 575-2801
Oasis Styling Salon - Walkersville, MD

Beauty Salons

8505 Woodsboro Pike

Walkersville - MD

(301) 845-6990
Oasisound - Frederick, MD

Sound Systems & Equipment

45 Waverley Dr Ste S

Frederick - MD

(301) 378-2567
Ob & Gyn Center - Frederick, MD

A Division of Capital Women's Care

Physicians & Surgeons Gynecology & Obstetrics

97 Thomas Johnson Dr Ste 101

Frederick - MD

(301) 663-4545
Ob-Gyn Medstar JR MD - Mount Airy, MD

Physicians & Surgeons Gynecology & Obstetrics

400 E Ridgeville Blvd

Mount Airy - MD

(301) 831-5811
Obarr Construction - Mount Airy, MD

Builders & Contractors

3994 Windermere Way

Mount Airy - MD

(301) 703-5695
Obrecht & Assoc - Frederick, MD

Builders & Contractors

7340 Executive Way

Frederick - MD

(301) 663-0402
Occupational Health Solutions - Frederick, MD

Occupational Health & Safety

470 Prospect Blvd

Frederick - MD

(301) 668-8041
Occupational Therapy Consulting - Frederick, MD

Occupational Therapy

47 E South St

Frederick - MD

(240) 457-9558
Octavo Designs - Frederick, MD

Web-Site Design, Management & Maintenance Services

19 N Court St Ste 100

Frederick - MD

(301) 695-8885
Oe Painting Home Service - Frederick, MD

Painting Contractors

405 Cranberry CT

Frederick - MD

(301) 360-9699
of Rocks Community of Point - Library - Buckeystown, MD

Public Libraries

Buckeystown - MD

(301) 874-4560
Off Broadway Shoes - Frederick, MD

Shoe Store

7340 Guilford Dr

Frederick - MD

(301) 662-1438
Office Depot - Frederick, MD

TAKING CARE OF BUSINESS

Office Equipment Supplies & Furniture

5600 Urbana Pike Ste B

Frederick - MD

(240) 379-7581
Office Essential - Frederick, MD

Office Equipment Supplies & Furniture

144 Fort Detrick

Frederick - MD

(304) 263-1895
Office Essentials - Frederick, MD

Office Equipment Supplies & Furniture

144 Fort Detrick

Frederick - MD

(301) 696-9393
Office for Children and Families - Frederick, MD

Miscellaneous Government

Frederick - MD

(301) 600-3533
Office Pride - Frederick, MD

Commercial & Industrial Cleaning Services

15 Wormans Mill CT Ste D

Frederick - MD

(240) 578-4711
Office Pride® Commercial Cleaning Services of Frederick-Gaithersburg

Building Cleaning Exterior

15 Worman’s Mill Court, Ste. D

Frederick - MD

(301) 514-0364
Office Solutions Loss - Thurmont, MD

Office Equipment Supplies & Furniture

5 E Main St

Thurmont - MD

(240) 288-8463
Offutt & Associates Cpa's PA - Frederick, MD

Public Accountants

14 E 13Th St

Frederick - MD

(301) 662-7585
Offutt & Associates Cpas PA - Frederick, MD

Public Accountants

14 E 13th St

Frederick - MD

(301) 662-7585
Offutt Horman Burdette and May PA - Frederick, MD

Attorneys

22 W 2nd St

Frederick - MD

(301) 662-8248
Offutt John B CPA - Frederick, MD

Public Accountants

14 E 13Th St

Frederick - MD

(301) 662-7585
Ogg DW Equipment - Frederick, MD

Farm Equipment

5149 Cap Stine Rd

Frederick - MD

(301) 473-4137
Ogle R Benjamin - Thurmont, MD

Builders & Contractors

12223 Creagerstown Rd

Thurmont - MD

(301) 271-7279
Olan Mills - Thurmont, MD

Misc Photographers

24 Pleasant Acres Dr

Thurmont - MD

(301) 271-2740
Old Bills Conodo 1 - Frederick, MD

Residential Construction Contractors

3625 Springhollow Ln

Frederick - MD

(301) 874-2502
Old Dominion Grill And Sushi - Frederick, MD

American Restaurants

5732 Buckeystown Pike

Frederick - MD

(301) 682-6888
Online Menu
Old Farm Liquors - Frederick, MD

Liquor & Alcohol Stores

2190 Old Farm Dr

Frederick - MD

(301) 663-5233
Old Farm Veterinary Hospital - Frederick, MD

Full Service, Dentistry, Accepting New Patients

Animal Hospitals

100 Tuscanny Dr Unit E

Frederick - MD

(301) 846-9988
Old Glory Antique Marketplace - Frederick, MD

Antique Stores

5862 Urbana Pike

Frederick - MD

(301) 662-9173
Old Line Bank - Monrovia, MD

Banks

11801 Fingerboard Rd

Monrovia - MD

(301) 607-7000
Old Mills Condo II - Frederick, MD

Condominiums

3623 Springhollow Ln

Frederick - MD

(301) 874-5969
Old Town Diner - Frederick, MD

Diner Restaurants

1450 W Patrick St

Frederick - MD

(301) 668-5370
Old Town Diner Iii - Myersville, MD

Restaurants/Food & Dining

307 Main St

Myersville - MD

(301) 508-7096
Old Town Jewelers - Walkersville, MD

Jewelry Stores

36 E Frederick St

Walkersville - MD

(301) 845-2200
Olde Mill Cabinetry - Frederick, MD

Mantels, Bookcases, Cabinetry, Remodeling

Cabinet Contractors

10036 Old Frederick Ter

Frederick - MD

(301) 898-3636
Olde Town Restaurant - Mount Airy, MD

Restaurants/Food & Dining

206 S Main St

Mount Airy - MD

(301) 829-4258
Olde Town Tavern - Frederick, MD

Beer Taverns

325 N Market St

Frederick - MD

(301) 695-1454
Online Menu
Olde Towne Historic Landscape - Frederick, MD

Fence Supplies & Materials

2 N East St

Frederick - MD

(301) 846-4000
Olde Towne Piano Shop - Frederick, MD

Piano & Organ Dealers

427 E Patrick St

Frederick - MD

(301) 695-6150
Olde Towne Restaurant - Mount Airy, MD

Food Delivery Services

206 S Main St

Mount Airy - MD

(301) 829-4257
Olde Towne Title - Frederick, MD

Title & Abstract Companies

5900 Frederick Crossing Ln

Frederick - MD

(301) 695-1880
Olden Construction Company - Ijamsville, MD

Builders & Contractors

4350 Tabler Rd

Ijamsville - MD

(301) 662-0143
Ole Mink Farm Recreation Resort - Rentals of Luxury Log Cabins Camping Cabins & Confe - Thurmont, MD

RV Parks

12806 Mink Farm Rd

Thurmont - MD

(301) 271-7012
Olearys Emporium - EMMITSBURG, MD

Cards Stationery & Giftwrap

16825 S SETON AVE

EMMITSBURG - MD

(301) 447-2795
Olive Garden Italian Restaurant - Frederick, MD

Italian Restaurants

5609 Spectrum Dr

Frederick - MD

(301) 663-1801
Olive Garden Restaurant - Frederick, MD

WHEN YOU'RE HERE YOU'RE FAMILY. Bar, Family Restaurant, Italian, Restaurant

Italian Restaurants

5609 Spectrum Dr

Frederick - MD

(301) 663-1801
Olivers Tire Service - Walkersville, MD

Tire Wholesale & Retail

9506 Eyler Ct

Walkersville - MD

(301) 845-6898
Ollie's Bargain Outlet - Frederick, MD

Gift Cards, Grocery, Department Stores, Discount Stores & Outlets, Furniture

Factory Outlet Stores

66 Waverley Dr Ste 600

Frederick - MD

(240) 379-7801
Olson Recovery Home - Frederick, MD

Alcohol & Drug Prevention Education

608 E Patrick St

Frederick - MD

(301) 606-3396
Om Chakra - Frederick, MD

Massage Therapists & Professional

31 W Patrick St Ste 100

Frederick - MD

(301) 228-3392
Om Ganesh - New Market, MD

Cellular & Mobile Telephone Service

11670 Old National Pike Ste 202

New Market - MD

(301) 882-4063
Om Ganesh One - Thurmont, MD

Physicians & Surgeons

120 Frederick Rd Ste A

Thurmont - MD

(301) 271-2290
Omg Nails & Spa - Ijamsville, MD

Manicurists & Pedicurists

3311 Worthington Blvd

Ijamsville - MD

(240) 699-0308
On Our Own - Frederick, MD

Mental Health Specialists

331 W Patrick St

Frederick - MD

(240) 651-5758
Once Upon A Time Events - Frederick, MD

Trade Shows

566 Boysenberry Ln

Frederick - MD

(301) 662-4632
Oncology Med - Point of Rocks, MD

Medical & Health Service Organizations

1595 Bowis Dr

Point of Rocks - MD

(301) 874-8541
One Bright Bird Consulting - Adamstown, MD

Mortgage Bankers & Correspondents

5741 Mountville Rd

Adamstown - MD

(301) 810-5027
One of A Kind - Frederick, MD

Consignment & Resale Stores

117 N Market St

Frederick - MD

(301) 695-8228
One Source Investment Properti - ADAMSTOWN, MD

Security Brokers & Dealers

5518 Adamstown Commons Dr

ADAMSTOWN - MD

(240) 599-6615
One Stop Deli - Point Of Rocks, MD

Delicatessen Restaurants

1595 Bowis Dr

Point Of Rocks - MD

(301) 874-2691
Online Menu
OneMain Financial - Frederick, MD

Banks

Frederick - MD

(301) 694-3160
OnePoint Business Solutions - Frederick, MD

Business Development

5257 Buckeystown Pike Suite 141

Frederick - MD

(301) 667-2519
Onmni Instrumentation Services - Ijamsville, MD

Instrument Repair Services

10075 Tyler CT

Ijamsville - MD

(240) 341-7915
Ontko, - Frederick, MD

Finance

3 W. Church St

Frederick - MD

(301) 304-7829
Opa Greek Restaurant - Frederick, MD

Restaurants/Food & Dining

50 Carroll Creek Way

Frederick - MD

(240) 651-3915
Opack Realtors - Walkersville, MD

Child Care & Day Care Services

8402 Discovery Blvd

Walkersville - MD

(301) 845-4984
Opal Ridge Dental - Frederick, MD

Dentists

1700 Kingfisher Dr Ste 11

Frederick - MD

(240) 457-4703
Ophthalmology Associates of Frederick

Physicians & Surgeons

176 Thomas Johnson Dr Ste 100

Frederick - MD

(301) 694-7557
Opossum Pike Veterinary Clinic - Veterinary Clinic (Out Patient Only) - Thurmont, MD

Veterinarians

29 N Carroll St

Thurmont - MD

(301) 271-3212
Opticon Solutions - Frederick, MD

Computer Software Service

5201 Bamburg CT

Frederick - MD

(301) 695-5864
Optimal Health Care - Frederick, MD

Home Health Care Service

174 Thomas Johnson Dr

Frederick - MD

(240) 578-4704
Options for Senior America - Frederick, MD

Home Health Care Service

1309 Orchard Way

Frederick - MD

(301) 624-1024
Orases - Frederick, MD

Computer Software

5728 Industry Lane

Frederick - MD

(301) 756-5527
Orchard Village Cleaners - Thurmont, MD

Dry Cleaning & Laundry

209 Tippin Dr

Thurmont - MD

(301) 271-0290
Oriental Rug Masters - Ijamsville, MD

Off 355 in Hyattstown

Carpet Rug & Upholstery Cleaners

10075 Tyler CT Ste 4

Ijamsville - MD

(301) 493-8181
Oriental Rug Masters - Ijamsville, MD

Carpet Rug & Upholstery Cleaners

10075 Tyler Ct Ste 4

Ijamsville - MD

(301) 831-3594
Orientalrugmasters - Ijamsville, MD

Carpet Rug & Linoleum Dealers

10075 Tyler CT

Ijamsville - MD

(301) 810-5773
Orion Wine & Spirits - Frederick, MD

Liquor & Alcohol Stores

8927 Fingerboard Rd

Frederick - MD

(301) 810-5328
Orkin Pest Control - Brunswick, MD

Pest Control Services

26 Petersville Rd

Brunswick - MD

(301) 834-5397
Orr Michael Dr - Frederick, MD

Chiropractor

1505 Rosemont Ave

Frederick - MD

(301) 698-8282
Ortaldo John DR - Frederick, MD

Business & Professional Associations

5694 Glenrock Dr

Frederick - MD

(301) 695-8322
Orthopaedic Associates of Frederick - Urbana Office Now Open;

Physicians & Surgeons

86 Thomas Johnson Ct

Frederick - MD

(301) 694-8311
Orthopaedic Specialists of Frederick

Specializing In, Specializing In:, Visit Our Offices in Urbana & MT. Airy

Physicians & Surgeons Orthopedic Surgery

52 Thomas Johnson Dr

Frederick - MD

(301) 663-9573
Orthopaedics Associates of Frederick

Physicians & Surgeons

86 Thomas Johnson CT

Frederick - MD

(301) 694-8311
Orthotic Solutions - Frederick, MD

Orthotics Prosthetics

188 Thomas Johnson Dr

Frederick - MD

(301) 682-8712
Orvis-Hunting Creek Outfitters - Frederick, MD

Fly-Tying, Rods

Fishing Tackle Repair & Parts

29 N Market St

Frederick - MD

(301) 668-4333
Ory Florals - New Market, MD

Delivery

Florists

71 W Main St

New Market - MD

(301) 865-8860
Osteopathic Primary Care Center - Emmitsburg, MD

Physicians & Surgeons

121 W Main St

Emmitsburg - MD

(301) 447-3310
Otis Cook - Frederick, MD

Farms

9734 Bartgis Rd

Frederick - MD

(301) 304-0340
Ott House - Emmitsburg, MD

American Restaurants

5 W Main St

Emmitsburg - MD

(301) 447-2625
Online Menu
Our Lady of Mount Carmel - Thurmont, MD

Catholic Churches

18 N Altamont Ave

Thurmont - MD

(301) 271-7300
Ourisman Lincoln of Frederick

Lincoln Mercury Dealers

6001 Urbana Pike Ste 200

Frederick - MD

(301) 662-7600
Ourisman Motors of Frederick

Cars, Trucks & Vans

7311 Grove Rd

Frederick - MD

(301) 360-5549
Out Start - Mount Airy, MD

Computer Software Service

12614 W Oak Dr

Mount Airy - MD

(301) 865-7262
Outback Steakhouse - Frederick, MD

Steak House Restaurants

1007 W Patrick St

Frederick - MD

(301) 662-9584
Outdoor Finishes - Frederick, MD

Landscape Contractors & Designers

1531 Dockside Dr

Frederick - MD

(301) 898-0280
Outside Unlimtd - Ijamsville, MD

Landscape Contractors & Designers

3042 Green Valley Rd

Ijamsville - MD

(301) 865-8101
Overhead Door - Mount Airy, MD

Garage Doors & Gates

4801 Buffalo Rd

Mount Airy - MD

(410) 635-2775
Overlook At Avalon - Frederick, MD

Residential Apartments

1369 Hampshire Dr

Frederick - MD

(301) 360-5329
Overlook Fence Company - New Market, MD

Fence Supplies & Materials

New Market - MD

(301) 662-5679
Overlook Lawncare - Knoxville, MD

Lawn Maintenance Services

1529 Clover Hill Ln

Knoxville - MD

(301) 834-6640
Overlook Manor Apartments - Frederick, MD

Property Management

91 Hill St

Frederick - MD

(301) 732-4526
Owen & Owen - Frederick, MD

Tax Return Preparation

105 E Patrick St

Frederick - MD

(301) 662-1503
Owens Patricia a Le - Mount Airy, MD

Electrolysis Treatments

4921 Buffalo Rd

Mount Airy - MD

(410) 635-6426
Owl's Club Restaurant - Frederick, MD

Seafood Restaurants

316 S Jefferson St

Frederick - MD

(301) 698-9797
Online Menu

Frederick County, Maryland Business Listings starting with O