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 closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-658-0012
Fax: 847-658-4732
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.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-658-0012
Cary Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-639-3151
Fax: 847-639-3184
Crystal Lake Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-459-8084
Fax: 815-459-0152
Fox River Grove Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-639-3150
Fax: 847-639-0222
Harvard Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-943-5182
Fax: 815-943-2867
Hebron Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-648-1719
Fax: 815-648-4626
Huntley Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-669-5423
Fax: 847-669-5509
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.
- Open hours
Day Open Close - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-669-5423
Island Lake Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 847-526-6153
Fax: 847-526-6198
Marengo Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-568-7449
Fax: 815-568-0059
Mchenry Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-385-2108
Fax: 815-385-0984
Richmond Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-678-3951
Fax: 815-678-4275
Ringwood Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-653-9047
Fax: 815-653-6028
Spring Grove Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-675-2161
Fax: 815-675-1022
Union Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-923-4307
Fax: 815-923-4307
Wonder Lake Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-653-7771
Fax: 847-653-6311
Woodstock Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- 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 - Buy postage online
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- STAMPS100
$100 value
Phone: 815-338-1094
Fax: 815-338-5898