Post offices in the county of Dewey, SD

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 Eagle Butte Post Office in Eagle Butte, SD

Eagle Butte 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
121 Main St Eagle Butte , SD 57625-9998

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Open hours
Day Open Close
Monday 8:30 AM 9:15 AM
11:00 AM 4:30 PM
Tuesday 8:30 AM 9:15 AM
11:00 AM 4:30 PM
Wednesday 8:30 AM 9:15 AM
11:00 AM 4:30 PM
Thursday 8:30 AM 9:15 AM
11:00 AM 4:30 PM
Friday 8:30 AM 9:15 AM
11:00 AM 4:30 PM
Saturday 11:00 AM 12:00 PM
Sunday Closed
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Street View Image of Isabel Post Office in Isabel, SD

Isabel 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
200 Main St Isabel , SD 57633-9998

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Open hours
Day Open Close
Monday 7:30 AM 12:00 PM
12:30 PM 2:00 PM
Tuesday 7:30 AM 12:00 PM
12:30 PM 2:00 PM
Wednesday 7:30 AM 12:00 PM
12:30 PM 2:00 PM
Thursday 7:30 AM 12:00 PM
12:30 PM 2:00 PM
Friday 7:30 AM 12:00 PM
12:30 PM 2:00 PM
Saturday 8:30 AM 10:00 AM
Sunday Closed

Phone: 605-466-2165

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Street View Image of Lantry Post Office in Lantry, SD

Lantry 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
14 Wheat Ave Lantry , SD 57636-9998

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Open hours
Day Open Close
Monday 8:00 AM 10:00 AM
Tuesday 8:00 AM 10:00 AM
Wednesday 8:00 AM 10:00 AM
Thursday 8:00 AM 10:00 AM
Friday 8:00 AM 10:00 AM
Saturday 8:00 AM 10:15 AM
Sunday Closed

Phone: 605-964-8018

  • 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 Ridgeview Post Office in Ridgeview, SD

Ridgeview 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
1 Us Highway 212 Ridgeview , SD 57652-9998

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Open hours
Day Open Close
Monday 10:00 AM 12:00 PM
Tuesday 10:00 AM 12:00 PM
Wednesday 10:00 AM 12:00 PM
Thursday 10:00 AM 12:00 PM
Friday 10:00 AM 12:00 PM
Saturday 10:00 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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Street View Image of Timber Lake Post Office in Timber Lake, SD

Timber 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
801 Main St Timber Lake , SD 57656-9998

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Open hours
Day Open Close
Monday 8:30 AM 12:30 PM
2:00 PM 4:00 PM
Tuesday 8:30 AM 12:30 PM
2:00 PM 4:00 PM
Wednesday 8:30 AM 12:30 PM
2:00 PM 4:00 PM
Thursday 8:30 AM 12:30 PM
2:00 PM 4:00 PM
Friday 8:30 AM 12:30 PM
2:00 PM 4:00 PM
Saturday 8:30 AM 9:30 AM
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 Trail City Post Office in Trail City, SD

Trail City 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
130 N Main St Trail City , SD 57657-9998

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Open hours
Day Open Close
Monday 9:00 AM 11:00 AM
Tuesday 9:00 AM 11:00 AM
Wednesday 9:00 AM 11:00 AM
Thursday 9:00 AM 11:00 AM
Friday 9:00 AM 11:00 AM
Saturday 10:00 AM 11:30 AM
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 Whitehorse Post Office in Whitehorse, SD

Whitehorse 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
18 S 2nd Ave Whitehorse , SD 57661-9998

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Open hours
Day Open Close
Monday 12:00 PM 2:00 PM
Tuesday 12:00 PM 2:00 PM
Wednesday 12:00 PM 2:00 PM
Thursday 12:00 PM 2:00 PM
Friday 12:00 PM 2:00 PM
Saturday 8:30 AM 10:30 AM
Sunday Closed
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value