List of Secondary Schools in Ireland

Last updated 4 November 2026

There are 256 secondary schools in Ireland, one in every 1,570 Irish companies. Three in ten of all post-primary schools are based in Dublin, Cork, Ballina, Limerick and Letterkenny. Below you find the largest post-primary schools in Ireland, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our Irish company database or through the Company Data API.

256 companies indexed · Data counted on 4 November 2026

Companies2561 in1,570 Irish companiesCities93Largest cityDublin 45Sole traders0.4%Employees20-49 (36%)Revenue< $100K (99%)Email65%Phone100%Website78%

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A live view of all 256 post-primary schools, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Intermediate School Killorglin Company LIMITED By GuaranteeIntermediate School Killorglin Company LIMITED By Guarantee

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Intermediate School Killorglin Company LIMITED By Guarantee	Ireland	Killarney	Laharn	Kerry	V93 NV09	*****.ie	2017	$1,094,470	9	Corporation	N/A	598425
2	Bruce College (cork) LIMITED	Ireland	Dublin	82-85 Leeson Street Lower	Dublin	D02 PX56	*****.ie	1989	$666,190	67	Corporation	158	150335
3	Sandford Park School Designated Activity Company	Ireland	Dublin	Sandford Road	Dublin	D06 FN29	*****.com	1934	$183,000	48	Corporation	N/A	8692
4	Mercy Pre-School Company LIMITED By Guarantee	Ireland	Waterford	Ozanam Street	Waterford	X91 DW20	*****.com	2011	$84,000	60	Corporation	N/A	501313
5	Hewitt College LIMITED	Ireland	Cork	Hewitt House	Cork	T23 K125	*****.ie	2000	$76,000	29	Corporation	N/A	324280
6	St Marys Secondary School	Ireland	Macroom	Chapel Hill	Cork	P12 RH67	*****.ie	1865	$70,000	40		N/A	N/A
7	St Francis Capuchin College	Ireland	Cork	Rochestown	Cork	N/A	*****.ie	1884	$70,000	18		N/A	N/A
8	The High And Diocesan School Company LIMITED By Guarantee	Ireland	Dublin	Zion Road	Dublin	D06 YR68	*****.com	1870	$70,000	30		N/A	N/A
9	Synge St Cbs	Ireland	Dublin 8	Synge Street	Dublin	D08 R283	*****.com	1864	$63,000	35		N/A	N/A
10	Colaiste Muire	Ireland	Cobh	Bishop Street	Cork	P24 EW42	*****.com	1976	$61,000	75		N/A	N/A
11	St Josephs Secondary School	Ireland	Rochfortbridge	St Joseph'S Secondary School	West Meath	N91 XV56	*****.ie	1950	$61,000	50		N/A	N/A
12	Scoil Mhuire	Ireland	Dublin	Gilford Road	Dublin	D04 DC04	*****.ie	1993	$61,000	25		N/A	N/A
13	Colaiste Nano Nagle	Ireland	Limerick	Presentation Secondary School	Limerick	V94 YW24	*****.ie	1955	$61,000	50		N/A	N/A
14	Drummin Development Association Company LIMITED By Guarantee	Ireland	Westport	Drummin	Mayo	N/A	*****.com	2001	$57,000	10	Corporation	N/A	345941
15	Moyle Park College	Ireland	Dublin	Clondalkin	Dublin	D22 VO72	*****.ie	1957	$55,000	45		N/A	N/A
16	St Marys Christian Brothers School	Ireland	Tralee	The Green	Kerry	N/A	*****.ie	2012	$52,000	48		N/A	N/A
17	Our Lady Of Lourdes Secondary School	Ireland	Wexford	Rosbercon	Wexford	N/A	*****.ie	2012	$52,000	25		N/A	N/A
18	Portarlington National School	Ireland	Portlaoise	Sandy Lane	Laois	N/A	N/A	2012	$52,000	4		N/A	N/A
19	Loughegar National School	Ireland	Mullingar	Loughagar	West Meath	N91 TFD6	N/A	2012	$52,000	7		N/A	N/A
20	Rackwallace National School	Ireland	Monaghan	Rockwallace	Monaghan	N/A	*****.com	2012	$52,000	5		N/A	N/A
21	Kilskyre Mixed National School	Ireland	Kells	Kilskyre	Meath	A82 DH22	*****.com	2016	$52,000	10		N/A	N/A
22	Roxborough National School	Ireland	Limerick	Roxborough	Limerick	N/A	N/A	2012	$52,000	12		N/A	N/A
23	Saint Lachtain's National School	Ireland	Kilkenny	Freshford	Kilkenny	N/A	N/A	2012	$52,000	13		N/A	N/A
24	Scoil Naomh Caoimhin	Ireland	Dublin	Kilnamanagh	Dublin	D24	N/A	2012	$52,000	12		N/A	N/A
25	Our Lady Of Good Counsel Boys National School	Ireland	Dublin	Mourne Road	Dublin	D12 H213	*****.com	2016	$52,000	20		N/A	N/A

Showing 25 of 256 companies

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Largest post-primary schools in Ireland

The biggest post-primary schools in Ireland by staff. Click a name for the record.

Colaiste Choilm is the largest post-primary school in Ireland by headcount. 49 firms employ 50 people or more; 2 employ 100 or more.

1Cork110 staff
2Clonmel100 staff
3Dublin92 staff
4Dublin91 staff
5Carlow85 staff
6Dublin84 staff
7Cashel82 staff
8Navan80 staff
9Dunboyne78 staff
10Cork75 staff

By employee size · 255 firms with a known headcount

Employees	Firms	%
1-4	28	11%
5-9	42	16%
10-19	44	17%
20-49	92	36%
50-99	47	18%
100-199	2	0.8%
200-499	0	0%
500-999	0	0%
1,000+	0	0%

11% have 1 to 4 people; 92 have 20 to 49; 49 have 50 or more.

How they compare

Next to related industries

There are 11 child care companies for every post-primary school in Ireland.

Industry	Firms	Website	1-4 staff
Child Care Companies	2,780	40%	29%
Primary Education Providers	1,761	88%	24%
Cleaning Companies	1,614	21%	74%
Churches	1,133	24%	83%
Secondary Schools	256	78%	11%

In other countries

Country	Firms	Per 1,000 cos.
The USA	33,747	0.5
The UK	4,846	0.5
France	4,657	0.3
Brazil	2,758	0.1
Poland	2,271	0.4
Ireland	256	0.6

More countries →

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How many secondary schools are there in Ireland?

Secondary schools and post-primary schools in Ireland

256

4 November 2026

There are 256 secondary schools and post-primary schools in Ireland in our data (4 November 2026). That is one in every 1,570 Irish companies. None was entered in the register so far in 2026.

Structure

Single-site firms: 255 100%
Head offices: 0
Branch offices: 1

Classification

NACE Rev. 2 code nclass:8531. Our platform filter is SIC 8211.

7 of the 256 are Ltd, DAC and PLC (3%); 1 are sole traders. They come from Companies Registration Office (CRO) and our Irish register data, through the Company Data API.

Where in Ireland?

Dublin has the most secondary schools in Ireland (45), ahead of Cork (12), Ballina (7), Limerick (7) and Letterkenny (7). Together the five hold three in ten of them.

Cities by number of firms

93 Irish cities have at least one post-primary school; 2 have ten or more; 48 have exactly one.

Frequently asked questions

How many secondary schools are there in Ireland?

There are 256 secondary schools and post-primary schools in Ireland in our data, counted on 4 November 2026. That is one in every 1,570 Irish companies.

Which is the largest post-primary school in Ireland?

Colaiste Choilm in Cork, with 110 staff. By revenue Intermediate School Killorglin Company Limited by Guarantee in Killarney leads with $1.1 million a year.

Which Irish city has the most secondary schools?

Dublin, with 45, ahead of Cork (12), Ballina (7), Limerick (7) and Letterkenny (7).

How big is a typical post-primary school?

11% of the 255 firms with a known headcount have one to four people; 49 have 50 or more. Most turn over under $100,000 a year.

Are Irish secondary schools sole traders or companies?

One in 256 (1) are sole traders, 0% are partnerships and 3% (7) are Ltd, DAC and PLC.

Can I download the full list?

Yes. All 256 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, in other countries

The lists closest to this one. Every industry and city in Ireland is on the Ireland page.

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