Originally a part of Zambales and Pampanga, the municipality contains the Capas National Shrine an Obelisk with a central bell, which was built and is maintained by the Philippine government as a memorial to the Filipino and American soldiers who died in Camp O'Donnell at Barangay Navy. during the end of the Bataan Death March. This is an important site related to Veterans Day in the Philippines, every April 9, the anniversary of the surrender of the combined US and Philippine forces to the Japanese in 1942.
Capas is Bordered by San Jose, Tarlac on the North, Tarlac City on the North-East, Concepcion, Tarlac on the East, Botolan, Zambales on the West and South West and Bamban, Tarlac on the rest of the southern parts.
Barangay Santa Juliana is a preferred route to Mount Pinatubo, Capas is also the location of Mount Telakawa or Straw hat Mountain on the boundaries of Santa Juliana and Maruglu. Mount Bueno,the site of Bueno hot springs in Barangay Bueno. Malatarlak and Salay or Lemon grass grows abundantly on Mor-Asia or Talahib mountain at Sitio Kalangitan. Mount Canouman is the largest in terms of surface area, known as the mountain of Spirits, it's a 10-hour walk from Sitio Salangui, only desperate farmers in search of Bulo or hut building material take the dangerous trip known for a few disappearances and casualties in the past. The majority of mountains in Capas are relatively easy climbs. Mount Dalin, the smaller straw hat mountain is near a 300-meter peak called Prayer Mountain or Peniel with a few rooms a person can check into for a few pesos. Many of the water ways in the province contain small bits of Petrified Wood, fish, fresh water crabs and other animals.
Namria and Dingding creek merge as the two major tributaries to Lucong river in Concepcion, Tarlac. Most of Tarlac's waterways that originate from Mt. Pinatubo pass through Capas, including the Bulsa Moriones River and Sta. Lucia River that form Tarlac River.
Barangay Cutcut meaning "Hole", "Gorge" or "Dug up hole" which owns Kawiliwili, Donia Lutgarda, Ligtasan, Buca and Sitio Kalangitan (The Heavens) is known for its landfill where garbage from other Municipalities are sometimes disposed of. Malutung gabun or Red sand has a replica of Capas National Shrine which is sometimes featured on Philippine maps. Barangay Sto. Rosario (Holy Rosary) has Villa De Sto. Rosario, Rosaryville, Small Tokyo, Sitio Salangui, Pascuala which has the most Poultries and Piggeries in Capas, Pinagpala which has a sugar-cane farm etc. Sto. Rosario is also the location of Capas Public Cemetery or Cabu Santu. Sto. Rosario is the location of the San Nicolas De Tolentino Parish which is the town church that stands next to The Dominican College of Tarlac which is visible from McArthur Highway, other schools in Capas include Capas East Central School, Dolores Highschool, Gabaldon Elementary School among others which are obscure from view when at the Highway.
Cubcub is the location of the Public Market and is on the right side of McArthur Highway facing North whereas Sto. Rosario is on the left. Sta. Rita is among the smallest barrios (Barangays) of the Municipality but has a church and school. Barangay Talaga is known for its production of Tinapa or smoked fish, Barangay Dolores has its garden plants and Sto. Domingo has the Capas Junction which also has fast food chains like the town proper. Barangay Aranguren is home to Poet Laureate Renato Alzadon, who is also known as the current "Ari ning Parnasong Capampangan" or "King of Capampangan Literature". Barangay Manlapig has rice fields and is among the liveliest barangays during the evening. Barangay Lawy is known for being a place for many of the first Ilocano settlers in the municipality. Barangay Mangga (Mango) used to be filled with the fruit bearing tree or presumably. Barangay Estrada is the last stop before reaching Tarlac City through McArthur highway. Patling, sta. Lucia, Bueno, Maruglu and Sta. Juliana are mountainous and hilly while filled with vast lands and forest, presumably the place where the earliest settlers of the town stayed.
Capas has relatively high ground, places near the mountain range are at an approximate 46 meters.
The feast day of San Nicolas De Tolentino is held every 10 September; the origin of the name Capas is disputed but has two prominent sources, it is said that town was either named after the edible plant called Capas-Capas or was taken from the first three letters of the surnames Capitulo, Capunfuerza, Capunpue, Capili, Capongga, Capunpun, Capati, Capadosa, Capil and Capuno etc. then adding the letters "a" and "s" hence forming "Capas".