Lake Ronkonkoma Post Office

300 Portion Rd, Ronkonkoma, NY 11779

Contact Numbers:

Phone: 631-588-1292
Fax: 631-471-1290
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 12:00pm
Sunday Closed

Pickup Services Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 12:00pm
Sunday Closed

Lobby Hours

Monday-Friday 7:00am - 5:00pm
Saturday 7:00am - 12:30pm
Sunday Closed

PO Box Access Hours

Monday-Friday 7:00am - 5:00pm
Saturday 7:00am - 12:30pm
Sunday Closed

PO Box Delivery Time

Monday-Saturday 11:00am
Sunday Closed

Last Collection Times

Monday-Friday 5:00pm
Saturday 1:00pm
Sunday Closed

Carrier Facility Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 12:00pm
Sunday Closed

Global Express Guaranteed® Hours

Monday-Friday 9:00am - 5:00pm
Saturday 9:00am - 12:00pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Burial Flags
  • Duck Stamps
  • Global Express Guaranteed®
  • Money Orders (Domestic)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Priority Mail International®

Visit our Links Page for Change of Address, Hold Mail/Stop Delivery, PO Boxes™ rentals and fees, Rates on Postage Stamps and Freight/Shipping, Holidays, Bulk Mail, Money Orders, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Ronkonkoma
200 Hawkins Ave
0.5 mile away

Lake Grove
1001 Hawkins Ave
1.1 miles away

Holbrook
445 Furrows Rd
1.5 miles away

Centereach
245 Centereach Mall
1.7 miles away

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