Barzun is located some 20 km east by south-east of Pau and 15 km north-west of Lourdes. Access to the commune is by the D940 road from Espoey in the north-west which passes through the commune just west of the village and continues south to Lamarque-Pontacq. The D640 comes from Livron in the north and passes through the village continuing to Pontacq in the south. The D642 and the D418 connect the D940 to the village. The D42 passes through the eastern tip of the commune. The commune is all farmland except for a belt of forest east of and parallel to the Ruisseau de l'Ousse. The Ruisseau de l'Ousse flows through the commune and the village from south-east to north and continues north to join the Gave de Pau at Pau. The Oussèreriver flows parallel to the Ruisseau de l'Ousse west of the village until they join north of the commune. The Sausse forms the western border of the commune as it flows north to join the Ourrou north-west of the commune. The Hoursoumou and the Ruisseau du Goua de Michou flow parallel to each other north through the east of the commune continuing to join the Gabas Lake at Luquet.
Places and hamlets
Arribarrouy
Balagué
Batailles
Bédat
Bédat et Sarrailh
Boyrie
Capblan
Cazaillet
Cazala
Las Cordes
La Débèze
Goua
Grada
Hourcaspy
Hourmiau
Hourq Mayou et Espélague
Labourdette
Lanas
Lapalangue
Larbiouze
Larroutis
Layrisse
Lupié Thén
Moulat
Nargasse
Pardimène
Pène
Pistoulet
Le Poublan
Ramounet
Técous et Labie
Tisnères
Toponymy
said that the name probably comes from the Latin anthroponym Barisius with the suffix -unum. The following table details the origins of the commune name and other names in the commune.
Name
Spelling
Date
Source
Page
Origin
Description
Barzun
Barzunum
1286
Raymond
22
Chapter
Village
Barsuu
1385
Grosclaude
Census
Barsun
1402
Raymond
22
Census
Barssun
1538
Raymond
22
Reformation
Barfun
1750
Cassini1
Barjun
1790
Cassini2
Lupié Thén
Le Lupié
1863
Raymond
106
Hamlet
Les Mouras
Les Mouras
1863
Raymond
119
Place
Le Pardiacq
Le Pardiacq
1863
Raymond
131
Place
La Peyrade
La Peyrade
1863
Raymond
134
Place
Sources:
Raymond: , 1863, on the page numbers indicated in the table.
Grosclaude:Toponymic Dictionary of communes, Béarn, 2006
In 2010 the commune had 595 inhabitants. The evolution of the number of inhabitants is known from the population censuses conducted in the commune since 1793. From the 21st century, a census of communes with fewer than 10,000 inhabitants is held every five years, unlike larger communes that have a sample survey every year.