Middletown Post Office

21177 Calistoga Rd Middletown, CA 95461
Phone: 707-987-3201

Parking: Street Parking
Post Office Lobby Hours
Monday 12:01am - 11:59pm
Tuesday 12:01am - 11:59pm
Wednesday 12:01am - 11:59pm
Thursday 12:01am - 11:59pm
Friday 12:01am - 11:59pm
Saturday 12:01am - 11:59pm
Sunday 12:01am - 11:59pm


Middletown Post Office is a United States Postal Service (USPS) facility in Middletown, CA. This post office offers a full array of services, including package delivery and first class mail.


Business Reply Mail® Account Balance
Business Reply Mail New Permit
Bulk Mail New Permit
Burial Flags
Bulk Mail Acceptance
Bulk Mail Account Balance
Carrier Services
Duck Stamps
Greeting Card Services
Money Orders (Domestic)
Money Orders (Inquiry)
Money Orders (International)
Pickup Hold Mail
Pickup Accountable Mail
Pickup Notice Left Mail
PO Boxes
Priority Mail International®

Nearby Post Offices

Cobb Post Office

16595 Highway 175
Cobb, CA 95426

Lower Lake Post Office

16165 Main St
Lower Lake, CA 95457

Calistoga Post Office

1013 Washington St
Calistoga, CA 94515

Pope Valley Post Office

5850 Pope Valley Rd
Pope Valley, CA 94567

Angwin Post Office

5 Angwin Plz
Angwin, CA 94508

Clearlake Post Office

14500 Olympic Dr
Clearlake, CA 95422

Clearlake Park Post Office

13417 Lakeshore Dr
Clearlake Park, CA 95424

Geyserville Post Office

116 School House Ln
Geyserville, CA 95441

Healdsburg Post Office

160 Foss Creek Cir
Healdsburg, CA 95448

Windsor Post Office

8800 Lakewood Dr
Windsor, CA 95492

Saint Helena Post Office

1461 Main St
Saint Helena, CA 94574

Clearlake Oaks Post Office

13280 E Highway 20
Clearlake Oaks, CA 95423