In the 2023 Spanish general election, for the Congress of Spain the residents voted 41.29% for the People's Party, 24.54% for the Spanish Socialist Workers' Party, and 19.45% voted for Vox.

[4] Guadarrama achieved the status of "villa" under Fernando V of Castile (II of Aragon) on November 22, 1504.

Fernando VI ordered the building of a road to A Coruña through the Guadarrama Pass, through which passed the Grande Armée with Napoleon searching for John Moore's Army in 1808.

This town was absolutely destroyed during the Spanish Civil War, as it was for almost three years a battlefront.

It is close to Sierra de Guadarrama, a mountain range that is visited by Madrid residents seeking cooler temperatures, especially in summer.