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.

Street View Image of Algonquin Post Office in Algonquin, IL

Algonquin 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
801 W Algonquin Rd Algonquin, IL 60102-2487

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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
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Street View Image of Algonquin East Post Office in Algonquin, IL

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

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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

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Street View Image of Cary Post Office in Cary, IL

Cary 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
2707 3 Oaks Rd Cary , IL 60013-9998

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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
  • Stamps.com logo
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Street View Image of Crystal Lake Post Office in Crystal Lake, IL

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.

Post office address
301 E Congress Pkwy Crystal Lake , IL 60014-6286

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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
  • Stamps.com logo
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Street View Image of Fox River Grove Post Office in Fox River Grove, IL

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.

Post office address
938 Il Route 22 Fox River Grove , IL 60021-1918

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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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Harvard Post Office in Harvard, IL

Harvard 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
300 N Eastman St Harvard , IL 60033-2760

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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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Hebron Post Office in Hebron, IL

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

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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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Huntley Post Office in Huntley, IL

Huntley 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
11013 N Woodstock St Huntley, IL 60142-6957

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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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Huntley Carrier Annex Post Office in Huntley, IL

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.

Street View Image of Island Lake Post Office in Island Lake, IL

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.

Post office address
129 E State Rd Island Lake , IL 60042-1000

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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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
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    $100 value
Street View Image of Marengo Post Office in Marengo, IL

Marengo 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
223 E Grant Hwy Marengo , IL 60152-3371

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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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
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    $100 value
Street View Image of Mchenry Post Office in Mchenry, IL

Mchenry 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
4530 W Crystal Lake Rd Mchenry , IL 60050-5308

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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
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
    Promo code
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Street View Image of Richmond Post Office in Richmond, IL

Richmond 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
5510 MIll St Richmond , IL 60071-8018

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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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
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    $100 value
Street View Image of Ringwood Post Office in Ringwood, IL

Ringwood 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
5016 Barnard MIll Rd Ringwood , IL 60072-9670

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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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value
Street View Image of Spring Grove Post Office in Spring Grove, IL

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.

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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value
Street View Image of Union Post Office in Union, IL

Union 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
17803 Depot St Union , IL 60180-1000

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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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value
Street View Image of Wonder Lake Post Office in Wonder Lake, IL

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.

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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value
Street View Image of Woodstock Post Office in Woodstock, IL

Woodstock 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
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
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value