Monmouthshire

American  

[mon-muhth-sheer, -sher] / ˈmɒn məθˌʃɪər, -ʃər /

noun

1. a county in eastern Wales. 330 sq. mi. (850 sq. km).

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Monmouthshire British  

/ ˈmɒnməθˌʃɪə, -ʃə /

noun

1. a county of E Wales: administratively part of England for three centuries (until 1830); mainly absorbed into the county of Gwent in 1974; reinstated with reduced boundaries in 1996: chiefly agricultural, with the Black Mountains in the N. Administrative centre: Cwmbran. Pop: 86 200 (2003 est). Area: 851 sq km (329 sq miles)

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Etymology

Origin of Monmouthshire

Monmouth ( def. ) + shire ( def. )

Example Sentences

Speaking on The BBC Radio Wales Phone-in, Ebenezer said Monmouthshire County Council had taken a "sensible" approach by letting head teachers decide whether to close their schools during the June heatwave.

From BBC • Jul. 3, 2026

It also closed to pedestrians in March, with people on both sides of the border - in Gloucestershire and Monmouthshire - expressing their frustration.

From BBC • Jun. 20, 2026

Sue Riley quit Monmouthshire council's Labour group last week over bullying claims and said a complaint she made to the party had not been acknowledged.

From BBC • Jun. 3, 2026

Powys and Monmouthshire councils were also represented at the ceremony.

From BBC • May 24, 2026

Unlike Darwin—gentleman biologist, and soon to be England’s most lauded natural historian—Wallace had been born to a middle-class family in Monmouthshire.

From "The Gene" by Siddhartha Mukherjee