Post offices in the county of Clark, 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 Casey Post Office in Casey, IL

Casey 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
100 W Alabama Ave Casey , IL 62420-9998

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Open hours
Day Open Close
Monday 9:00 AM 1:00 PM
2:00 PM 4:30 PM
Tuesday 9:00 AM 1:00 PM
2:00 PM 4:30 PM
Wednesday 9:00 AM 1:00 PM
2:00 PM 4:30 PM
Thursday 9:00 AM 1:00 PM
2:00 PM 4:30 PM
Friday 9:00 AM 1:00 PM
2:00 PM 4:30 PM
Saturday 8:30 AM 10:30 AM
Sunday Closed

Phone: 217-932-2163

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Street View Image of Marshall Post Office in Marshall, IL

Marshall 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
115 N 7th St Marshall , IL 62441-9998

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Open hours
Day Open Close
Monday 9:00 AM 5:00 PM
Tuesday 9:00 AM 5:00 PM
Wednesday 9:00 AM 5:00 PM
Thursday 9:00 AM 5:00 PM
Friday 9:00 AM 5:00 PM
Saturday 9:00 AM 11:00 AM
Sunday Closed

Phone: 217-826-5311

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Street View Image of Martinsville Post Office in Martinsville, IL

Martinsville 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
2 N York St Martinsville , IL 62442-9998

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Open hours
Day Open Close
Monday 8:30 AM 11:00 AM
12:30 PM 4:30 PM
Tuesday 8:30 AM 11:00 AM
12:30 PM 4:30 PM
Wednesday 8:30 AM 11:00 AM
12:30 PM 4:30 PM
Thursday 8:30 AM 11:00 AM
12:30 PM 4:30 PM
Friday 8:30 AM 11:00 AM
12:30 PM 4:30 PM
Saturday 9:15 AM 11:00 AM
Sunday Closed

Phone: 217-382-6623

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Street View Image of West Union Post Office in West Union, IL

West 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
211 W Union St West Union , IL 62477-9998

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Open hours
Day Open Close
Monday 8:00 AM 12:00 PM
Tuesday 8:00 AM 12:00 PM
Wednesday 8:00 AM 12:00 PM
Thursday 8:00 AM 12:00 PM
Friday 8:00 AM 12:00 PM
Saturday 9:00 AM 11:00 AM
Sunday Closed

Phone: 217-279-3310

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Street View Image of Westfield Post Office in Westfield, IL

Westfield 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
130 W State St Westfield , IL 62474-9998

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Open hours
Day Open Close
Monday 8:00 AM 12:00 PM
Tuesday 8:00 AM 12:00 PM
Wednesday 8:00 AM 12:00 PM
Thursday 8:00 AM 12:00 PM
Friday 8:00 AM 12:00 PM
Saturday 8:30 AM 9:30 AM
Sunday Closed

Phone: 217-967-5205

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