Baltimore County Post Office

Find Baltimore County Maryland post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Baldwin Post Office 13516 Long Green Pike Baldwin MD 21013 410-592-7538


Boring Post Office 14707 Old Hanover Road Reisterstown MD 21136 410-429-4474

Brooklandville Post Office 10807 Falls Road Lutherville MD 21093 410-321-0593

Butler Post Office 14921 Falls Road Butler MD 21023 410-472-0310

Catonsville Post Office 1001 Frederick Road Catonsville MD 21228 410-869-7204

Chase Post Office 12404 Eastern Avenue Middle River MD 21220 410-335-6283

Cockeysville Hunt Valley Post Office 115 Wight Avenue Cockeysville MD 21030 410-771-0783

Dundalk Sparrows Point Post Office 44 Shipping Place Dundalk MD 21222 410-284-4326

Essex Post Office 444 Maryland Avenue Essex MD 21221 410-687-6366

Fork Post Office 12544 Harford Road Hydes MD 21082 410-592-7279

Fort Howard Post Office 9200 Howard Avenue Edgemere MD 21052 410-477-2105

Freeland Post Office 21600 New Freedom Road Freeland MD 21053 410-357-9969

Glen Arm Post Office 12112 Long Green Pike Glen Arm MD 21057 410-592-9658

Glyndon Post Office 2 Railroad Avenue Glyndon MD 21071 410-517-3184

Gwynn Oak Post Office 6101 Liberty Road Lochearn MD 21207 410-944-2435

Halethorpe Post Office 6 Waelchli Avenue Halethorpe MD 21227 410-242-1483

Hydes Post Office 5237 Hydes Road Hydes MD 21082 410-592-6294

Kingsville Post Office 7363 Sunshine Avenue Kingsville MD 21087 410-592-3503

Loch Raven Post Office 808 Gleneagles Court Towson MD 21286 410-828-1430

Lutherville Timonium Post Office 9603 Deereco Road Lutherville MD 21093 410-252-0741

Maryland Line Post Office 21400 York Road Parkton MD 21120 410-343-3064

Middle River Post Office 200 Wilson Point Road Middle River MD 21220 410-687-5568

Monkton Post Office 16944 York Road Monkton MD 21111 410-357-8869

Nottingham Post Office 4990 Mercantile Road Nottingham MD 21236 410-931-4305

Owings Mills Post Office 10821 Red Run Boulevard Owings Mills MD 21117 443-394-0137

Parkton Post Office 645 Happy Ln Parkton MD 21120 410-357-9255

Parkville Post Office 8201 Harford Road Parkville MD 21234 410-663-1346

Perry Hall Post Office 8744 Belair Road Perry Hall MD 21128 410-256-1014

Phoenix Post Office 14320 Jarrettsville Pike Phoenix MD 21131 410-666-0692

Pikesville Post Office 1325 Bedford Avenue Pikesville MD 21208 410-602-2761

Randallstown Post Office 3608 Offutt Road Randallstown MD 21133 410-496-6153

Reisterstown Post Office 5 Glyndon Drive Reisterstown MD 21136 410-833-4259

Riderwood Post Office 8016 Bellona Avenue Towson MD 21204 410-821-7502

Rosedale Post Office 7000 Golden Ring Road Rosedale MD 21237 410-391-8074

Security Sq Post Office 6901 Security Boulevard Woodlawn MD 21244 410-944-3517

Sparks Glencoe Post Office 14800 York Road Sparks MD 21152 410-472-0706

Stevenson Post Office 10421 Stevenson Road Pikesville MD 21153 410-653-5613

Towson Finance Post Office 101 West Chesapeake Avenue Towson MD 21285 410-828-6324

Towson Town Center Post Office 825 Dulaney Valley Road Towson MD 21204 410-828-7724

Upper Falls Post Office 7755 Bradshaw Road Upper Falls MD 21156 410-592-3415

Upperco Post Office 5420 Arcadia Avenue Upperco MD 21155 410-374-9404

White Hall Post Office 1415 Weisburg Road White Hall MD 21161 410-357-9886

White Marsh Post Office 5422 Ebenezer Road White Marsh MD 21162 410-335-7215

Windsor Mill Post Office 2513 North Rolling Road Milford Mill MD 21244 410-594-9284

About Post Offices

What Change of Address options are available?

Customers can request a temporary or permanent Change of Address either online or in person at the Post Office using PS Form 3575. The online application for Change of Address has a $1.00 identity validation fee.

Is it possible to insure mail and items sent via the USPS?

Yes. Standard mail can be insured for up to $5,000 for an additional fee. Registered mail items can be insured for up to $50,000.

What is the USPS Office of Inspector General?

The Office of Inspector General (OIG) is a division within the USPS responsible for ensuring the integrity and accountability of the postal service. It conducts investigations to safeguard the postal system and performs audits and reviews.