ACNB Bank, Littlestown Branch Basic Info Reviews Routing Numbers Map & Direction Name: ACNB Bank, Littlestown Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 444 West King Street Littlestown, Pennsylvania 17340 Adams County View other branches Phone: 717-334-3161 Please enable JavaScript to view the comments powered by Disqus. From: To: