Killimer is best known for the Killimer-Tarbert car ferry service, operated by Shannon Ferries.
According to the geographer Samuel Lewis the parish counted 3023 inhabitants in 1837. The 2011 census returned 498 inhabitants for Killimer.
The village is in the Killimer and Knockerra parish of the Roman Catholic Diocese of Killaloe. Parish churches are St Imy in Killimer and St Senan's in Knockerra.
East of the village is the Moneypoint coal-fired electricity generating station.
Killimer GAA returned to competitive action at senior level in 2012. Due to a declining population Killimer had not enough players to field a senior team in the period 2008-2012. Most players had been playing with Shannon Gaels or Kilrush Shams in those years. Killimers only Clare Senior Football Championship triumph was in 1896.