Post offices in the county of McHenry, IL
Use this page to find the post offices in your county that open earliest or stay open latest. The open hours listed are for the post office's retail hours, which means the hours in which a postal service employee is available at the counter to help with mailings and other services. Oftentimes lobbies are open extended hours, and you are able to check your PO box, drop off packages, or use the self-service APC machine to buy postage. The list below is first sorted alphabetically by city, then by post office name. Street View photos of post offices are shown when available. Please contact us if you find an error, so that we can correct it.
Algonquin Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 801 W Algonquin Rd Algonquin, IL 60102-2487 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:30 PM Tuesday 8:30 AM 5:30 PM Wednesday 8:30 AM 5:30 PM Thursday 8:30 AM 5:30 PM Friday 8:30 AM 5:30 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Phone
- 847-658-0012
- Fax
- 847-658-4732
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Algonquin East Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 1420 E Algonquin Rd Algonquin, IL 60102-5445 Get directions
- Open hours
Day Open Close Monday 8:30 AM 1:30 PM 2:30 PM 4:30 PM Tuesday 8:30 AM 1:30 PM 2:30 PM 4:30 PM Wednesday 8:30 AM 1:30 PM 2:30 PM 4:30 PM Thursday 8:30 AM 1:30 PM 2:30 PM 4:30 PM Friday 8:30 AM 1:30 PM 2:30 PM 4:30 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Phone
- 847-658-0012
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Cary Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 2707 3 Oaks Rd Cary, IL 60013-9998 Get directions
- Open hours
Day Open Close Monday 9:00 AM 6:00 PM Tuesday 9:00 AM 6:00 PM Wednesday 9:00 AM 6:00 PM Thursday 9:00 AM 6:00 PM Friday 9:00 AM 6:00 PM Saturday 9:00 AM 3:00 PM Sunday Closed - Phone
- 847-639-3151
- Fax
- 847-639-3184
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Crystal Lake Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 301 E Congress Pkwy Crystal Lake, IL 60014-6286 Get directions
- Open hours
Day Open Close Monday 8:30 AM 6:30 PM Tuesday 8:30 AM 6:30 PM Wednesday 8:30 AM 6:30 PM Thursday 8:30 AM 6:30 PM Friday 8:30 AM 6:30 PM Saturday 9:00 AM 4:00 PM Sunday Closed - Phone
- 815-459-8084
- Fax
- 815-459-0152
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Fox River Grove Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 938 Il Route 22 Fox River Grove, IL 60021-1918 Get directions
- Open hours
Day Open Close Monday 8:00 AM 6:00 PM Tuesday 8:00 AM 6:00 PM Wednesday 8:00 AM 6:00 PM Thursday 8:00 AM 6:00 PM Friday 8:00 AM 6:00 PM Saturday 9:00 AM 2:00 PM Sunday Closed - Phone
- 847-639-3150
- Fax
- 847-639-0222
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Harvard Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 300 N Eastman St Harvard, IL 60033-2760 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Phone
- 815-943-5182
- Fax
- 815-943-2867
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Hebron Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 9912 Illinois St Hebron, IL 60034-8912 Get directions
- Open hours
Day Open Close Monday 9:00 AM 12:30 PM 2:30 PM 4:30 PM Tuesday 9:00 AM 12:30 PM 2:30 PM 4:30 PM Wednesday 9:00 AM 12:30 PM 2:30 PM 4:30 PM Thursday 9:00 AM 12:30 PM 2:30 PM 4:30 PM Friday 9:00 AM 12:30 PM 2:30 PM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-648-1719
- Fax
- 815-648-4626
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Huntley Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 11013 N Woodstock St Huntley, IL 60142-6957 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 12:00 PM Sunday Closed - Phone
- 847-669-5423
- Fax
- 847-669-5509
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Huntley Carrier Annex Post Office does not have retail counter services
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 10669 Wolf Dr Huntley, IL 60142-7062 Get directions
- Open hours
Day Open Close - Phone
- 847-669-5423
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Island Lake Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 129 E State Rd Island Lake, IL 60042-1000 Get directions
- Open hours
Day Open Close Monday 9:00 AM 4:30 PM Tuesday 9:00 AM 4:30 PM Wednesday 9:00 AM 4:30 PM Thursday 9:00 AM 4:30 PM Friday 9:00 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 847-526-6153
- Fax
- 847-526-6198
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Marengo Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 223 E Grant Hwy Marengo, IL 60152-3371 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 12:00 PM Sunday Closed - Phone
- 815-568-7449
- Fax
- 815-568-0059
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Mchenry Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 4530 W Crystal Lake Rd Mchenry, IL 60050-5308 Get directions
- Open hours
Day Open Close Monday 7:30 AM 5:30 PM Tuesday 7:30 AM 5:30 PM Wednesday 7:30 AM 5:30 PM Thursday 7:30 AM 5:30 PM Friday 7:30 AM 5:30 PM Saturday 8:30 AM 1:00 PM Sunday Closed - Phone
- 815-385-2108
- Fax
- 815-385-0984
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Richmond Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 5510 MIll St Richmond, IL 60071-8018 Get directions
- Open hours
Day Open Close Monday 8:30 AM 4:30 PM Tuesday 8:30 AM 4:30 PM Wednesday 8:30 AM 4:30 PM Thursday 8:30 AM 4:30 PM Friday 8:30 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-678-3951
- Fax
- 815-678-4275
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Ringwood Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 5016 Barnard MIll Rd Ringwood, IL 60072-9670 Get directions
- Open hours
Day Open Close Monday 7:30 AM 4:30 PM Tuesday 7:30 AM 4:30 PM Wednesday 7:30 AM 4:30 PM Thursday 7:30 AM 4:30 PM Friday 7:30 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-653-9047
- Fax
- 815-653-6028
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Spring Grove Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 2410 Westward Dr Spring Grove, IL 60081-8855 Get directions
- Open hours
Day Open Close Monday 8:30 AM 4:30 PM Tuesday 8:30 AM 4:30 PM Wednesday 8:30 AM 4:30 PM Thursday 8:30 AM 4:30 PM Friday 8:30 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-675-2161
- Fax
- 815-675-1022
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Union Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 17803 Depot St Union, IL 60180-1000 Get directions
- Open hours
Day Open Close Monday 9:30 AM 12:30 PM 1:30 PM 4:30 PM Tuesday 9:30 AM 12:30 PM 1:30 PM 4:30 PM Wednesday 9:30 AM 12:30 PM 1:30 PM 4:30 PM Thursday 9:30 AM 12:30 PM 1:30 PM 4:30 PM Friday 9:30 AM 12:30 PM 1:30 PM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-923-4307
- Fax
- 815-923-4307
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Wonder Lake Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 3710 E Wonder Lake Rd Wonder Lake, IL 60097-9800 Get directions
- Open hours
Day Open Close Monday 8:00 AM 5:00 PM Tuesday 8:00 AM 5:00 PM Wednesday 8:00 AM 5:00 PM Thursday 8:00 AM 5:00 PM Friday 8:00 AM 5:00 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 815-653-7771
- Fax
- 847-653-6311
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Woodstock Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 1050 Country Club Rd Woodstock, IL 60098-6402 Get directions
- Open hours
Day Open Close Monday 8:30 AM 6:00 PM Tuesday 8:30 AM 6:00 PM Wednesday 8:30 AM 6:00 PM Thursday 8:30 AM 6:00 PM Friday 8:30 AM 6:00 PM Saturday 9:00 AM 1:00 PM Sunday Closed - Phone
- 815-338-1094
- Fax
- 815-338-5898
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value