Electoral Commission Ireland — constituency boundaries, voter registration & the 2024 map

The Electoral Commission expanded the Dáil from 160 to 174 seats and created 4 new constituencies for 2024 — all based on Census 2022 population data showing Ireland had grown to 5.15 million. It was the first boundary review conducted by a permanent independent authority rather than an ad-hoc commission. The data is below.

What the Electoral Commission does

Before the Electoral Commission was established, constituency boundary reviews were conducted by ad-hoc constituency commissions. The Electoral Commission makes this function permanent and independent — separate from government — for the first time in the state's history.

The 2024 constituency boundary review

The Electoral Commission's first constituency review was triggered by Census 2022, which recorded Ireland's population at 5.15 million — an 8.1% increase from 2016. Under the Electoral Act, Dáil seats are allocated at approximately one TD per 30,000 people, with each constituency returning 3–5 TDs.

All 43 constituencies — seats 2024

The four new constituencies (highlighted) reflect population growth in Dublin and Tipperary. All other constituency boundaries were reviewed and most were adjusted to reflect population shifts since 2016.

Electoral register Ireland — how to check and update

The Electoral Commission manages Ireland's electoral register, which moved to a rolling (continuous) registration system in 2023. Unlike the previous annual snapshot, the register is updated throughout the year.

• Check your registration: checktheregister.ie — the official Electoral Commission voter lookup tool. Enter your name and address to verify you are correctly registered.
• Update or register: Applications are submitted to your local county or city council. Links to all councils are at electoralcommission.ie.
• Eligibility: Irish citizens and EU citizens resident in Ireland may register to vote in Dáil elections. UK citizens resident in Ireland may vote in local elections. Non-EEA citizens may vote in local elections only.
• Deadline: You must be registered before an election is called to vote in it. With continuous registration, there is no annual deadline — but register well in advance of any anticipated election.

Why constituency boundaries changed — the Census 2022 connection

The Electoral Commission bases constituency boundaries on Census population counts. Census 2022 showed that Ireland's fastest-growing areas — Dublin commuter counties, Fingal, Meath, Kildare, and Wicklow — had grown significantly faster than the rest of the state. The boundary revision reflects this: Dublin-area constituencies gained seats while more rural areas maintained or consolidated their representation.

IrelandInsights maps Census 2022 population growth at electoral division level — the same data underpinning the Electoral Commission's boundary review. Counties like Kildare (+18.5%), Meath (+15.2%), and Wicklow (+13.4%) saw the largest proportional gains, directly translating into additional Dáil representation.

2024 election results →  ·  Elections map →  ·  Population growth →

Area demographics →  ·  Commuter towns →

The Electoral Commission's first boundary review added 14 seats, all driven by population data from Census 2022. When Census 2027 data is released, the Commission will review boundaries again — and the counties growing fastest today (Meath, Kildare, Fingal) are likely to gain further representation.