The museum houses two galleries; one exhibits Victorian parlour "customs and culture," "the busy routine of a pioneer kitchen," and the "tools of a 19th Century blacksmith's shop", while the second holds temporary exhibits . The museum grounds also house an 1835 "authentic log cabin" that was originally "located on the Old Plank Road near Caledonia, the cabin was once home to the Nicholas Family..." .
The archives research facility provides access to collections relevant to historians and genealogists interested in the county. Special events are held throughout the year.
The museum has published histories on specific aspects of county life, including:
The Haldimand County Museum & Archives is one of three heritage facilities operated by the Heritage and Culture Division of the municipal government (Haldimand County); the other two are the Edinburgh Square Heritage and Culture Centre and the Wilson MacDonald Memorial School Museum. Ruthven Park National Historic Site (a Canadian national historic site) is located approximately 4 kilometres north of the Haldimand County Museum & Archives and another national historic site, Chiefswood, is located within the county boundaries, but on the Six Nations Reserve approximately 25 kilometres to the northwest. There are also privately operated cultural centres in the county: Cottonwood Mansion, Caledonia Grand Trunk Station, Caledonia Mill, and the No. 6 RCAF Museum Dunnville. The annual Caledonia Fair also exhibits historical artifacts and tableaux of early agrarian and industrial life in the county.