Under 1% of homes in Three Mile House are estimated to have radon above the reference level. Only a handful of its homes, if any, sit low beside water.

0%of homes in high-radon areas

Homes exposed · share of the town’s homes

In high-radon areas0%

On high landslide susceptibility3.2%

Share of homes	Three Mile House	Co. Monaghan	Ireland
On high landslide susceptibility	3.2%	under 0.1%	0%
In high-radon areas	0%	0%	0%

homes mapped for these shares

Full pageThree Mile House’s flood & hazards pageOpen the page

Ground3.2% of homes · High landslide susceptibility · Irish towns 0%Low-lying homes0% of homes · Homes low beside water Radon0% of homes in high-radon areas Be readyFlood warnings, radon tests and insurance

EPA radon map, GSI landslide susceptibility and our low-lying homes estimate from OPW LiDAR.

Climate

Winter nights bite in Three Mile House: January lows of 1.7°C, colder than Co. Monaghan’s towns or Irish towns

Three Mile House’s year-round mean comes to 9.4°C. Here July highs average 19.3°C, about level with Co. Monaghan’s towns (19.4°C) and below Irish towns (19.9°C). A year brings 1,030 mm of rain to Three Mile House.

19.3°CJuly afternoon high

Average afternoon highs by season · 1991–2020 averages

Winter7.8°C

Spring12.7°C

Summer18.7°C

Autumn13.3°C

Climate, 1991–2020	Three Mile House	Co. Monaghan	Ireland
Average temperature over the year	9.4°C	9.5°C	10.3°C
January low	1.7°C	1.8°C	2.9°C
July high	19.3°C	19.4°C	19.9°C
Rain a year	1,030 mm	992 mm	937 mm

19.3°C

July high

1.7°C

January low

1,030 mm

Rain a year

107 mm

Wettest month

Air frosts

Full pageThree Mile House’s climate pageOpen the page

The yearSummer highs 18.7°C, winter lows 1.7°C At a glanceJuly highs 19.3°C, January lows 1.7°C Rain1,030 mm of rain a year · December is the wettest month, 107 mm Weather station25 km to the weather station · Ballyhaise

Met Éireann, 1991–2020 averages.

Health

Fewer people in Three Mile House give unpaid care than in Co. Monaghan’s towns or across Irish towns: 0.7%

For its ages, Three Mile House has 128 people in bad health for every 100 expected, below Co. Monaghan’s towns (138) but above Irish towns (113). 2.7% of residents report bad or very bad health. Weighed against its ages, disability in the town runs at 94 per 100 expected.

85%good or very good health

General health, self-reported

Good or very good 85%Fair 12%Bad or very bad 3%

Census 2022	Three Mile House	Co. Monaghan	Ireland
Unpaid carers	0.7%	4.7%	5.4%
Good or very good health	85%	87%	88%
Bad or very bad health	2.7%	2.4%	2%
With a disability	22%	21%	22%

128

bad health per 100 expected · Co. Monaghan 138

disability per 100 expected · Co. Monaghan 93

83.5 · 79.5

life expectancy, women · men, the Border region, 2016

27%

hold a medical card, HSE Dublin and North East

Full pageThree Mile House’s health pageOpen the page

Census health85% in good or very good health Health GradeBad health 128, disability 94 per 100 expected Getting care0% within 800 m of a pharmacy The wider areaLife expectancy: women 83.5, men 79.5

CSO, Census 2022 general health, disability and carers · CSO life expectancy by region, 2016 · HSE medical cards, 2024 · TownRatings age-standardised ratios

Housing

Few households rent privately in Three Mile House: 13%, fewer than in Co. Monaghan’s towns and Irish towns

24% of households rent from a council or housing body. Owners make up 60% of households, about level with Irish towns (61%) and above Co. Monaghan’s towns (51%).

€229Kmedian sale price

Median sale price · Eircode area, 2023–2025

Three Mile House€229K

Co. Monaghan€230K

Irish towns€350K

Housing	Three Mile House	Co. Monaghan	Ireland
Households renting privately	13%	28%	22%
Households in social housing	24%	21%	13%
Median sale price	€229K	€230K	€350K
Households owning their home	60%	51%	61%

60%

own their home · Irish towns 61%

13%

rent privately · Irish towns 22%

€1,028

a month on new tenancies, County Monaghan

Full pageThree Mile House’s cost of living pageOpen the page

Owners and renters60% own their home Cost of livingMedian sale price €228,600 Renting€1,028 a month · Average rent on new tenancies

Property Price Register · CSO residential prices by Eircode area · RTB rents · CSO, Census 2022 tenure · The price is for the postcode area H18, not the town alone: too few sales inside the town carry a full address.

Outdoors

Green space is close to home in Three Mile House: 100% of homes are within 400 m of some, more than Co. Monaghan’s towns or Irish towns

Within 1 km, 2.2% of the land is woodland, below Co. Monaghan’s towns (5.5%) and Irish towns (2.7%) alike. Three Mile House offers 13.5 ha of green space per 1,000 residents. 9 waymarked trails and greenways start within 5 km.

100%of homes near green space

Green space per 1,000 residents · per 1,000 residents

Three Mile House13.5 ha

Co. Monaghan1.4 ha

Irish towns4.1 ha

Outdoors	Three Mile House	Co. Monaghan	Ireland
Near a park	100%	67%	92%
Green space per 1,000 residents	13.5 ha	1.4 ha	4.1 ha
Paths per km² of town	0.1 km per km²	1.0 km per km²	2.1 km per km²
Woodland within 1 km	2.2%	5.5%	2.7%

100%

Near a park

13.5 ha

Green space

1 km

Footpaths

2.2%

Woodland

Full pageThree Mile House’s outdoors pageOpen the page

Green space nearby100% of homes within 400 m Parks13.5 ha per 1,000 residents · 2 ha of green space, 0 parks Protected nature0% of the land within 5 km · No protected site within 5 km Paths and trails1 km of paths · 9 trails and greenways within 5 km

OpenStreetMap parks and paths, NPWS protected sites and the National Trails Register.

Weather

Forecast for Three Mile House: partly cloudy today and highs near 11 degrees

No rain is due today, though a breeze picks up to 20 km/h; the low is 5°C. The warmest afternoon ahead comes on Thursday, at 10°C; the coolest tops out at 6°C. Three Mile House’s November pattern is steady: afternoons average 10°C, nights 4°C.

11°C / 5°CToday

This month and the next three, normal highs · 1991–2020 averages

November10°C

December8°C

January7°C

February8°C

Season	High	Low	Rain
Winter	8°C	2°C	288 mm
Spring	13°C	4°C	213 mm
Summer	19°C	10°C	251 mm
Autumn	13°C	6°C	278 mm

11°C / 5°C

Today

None

Rain, next 24 hours

13 km/h

Wind

96%

Humidity

9 h 12 min

Daylight

Full pageThree Mile House’s weather pageOpen the page

Next 24 hoursNone Rain, next 24 hours · Staying mostly dry The week aheadA normal 4 November: 11°C / 5°C Warnings & more9 h 12 min Daylight · 07:35 to 16:47

Forecast: MET Norway (CC BY 4.0) · normals: Met Éireann, 1991–2020

Work & commute

Fewer people in Three Mile House are out of work than in Co. Monaghan’s towns or across Irish towns: 6.8%

10% of workers worked mainly from home at the census. The average trip to work took 28.9 min, above Co. Monaghan’s towns (24.6 min) and Irish towns (27.6 min) alike. The census found 69% of 15- to 64-year-olds in work.

14%walk, cycle or take transit

How working residents got to work · census 2022

Car or van75%

Walk9%

Bus5%

Census 2022	Three Mile House	Co. Monaghan	Ireland
Unemployment rate	6.8%	12%	9.2%
Average trip	28.9 min	24.6 min	27.6 min
Trips under 15 minutes	31%	47%	31%
In work, 15 to 64	69%	66%	68%

€46,400

household income, 2022 estimate · Co. Monaghan €50,617

10%

worked mainly from home, 2022

13%

trips of an hour or more

1,635

on the Live Register, County Monaghan, September 2026

Full pageThree Mile House’s work & commute pageOpen the page

Unemployment6.8% unemployed · Irish towns: 9.2%Getting to work14% walk, cycle or take transit Median income€46,400 a year · Median household income, before tax Benefits over time1,635 on the Live Register · −11% on a year earlier

CSO, Census 2022 travel to work, work and education · CSO Geographical Profiles of Income 2022 · Live Register · Census day was 3 April 2022, with working from home still common; shares are of those who travelled.

Who lives here

Few people in Three Mile House were born abroad: 15%, fewer than in Co. Monaghan’s towns and Irish towns

Under 15: 13% of residents. The 15-to-24 age group makes up 13% of residents.

42.1median age

Three Mile HouseCo. MonaghanIreland

Co. MonaghanIreland

Ages · share of residents

20%

Highest education · residents 15 and older who have finished education

Primary or none18%

Lower secondary17%

Leaving Cert43%

Diploma or cert5%

Degree or higher18%

Women and men · all residents

54.1% of Three Mile House’s residents are women

80 women and 68 men live here; across Ireland, women are 50.6%.

Ages and education in Three Mile House
	Three Mile House	Co. Monaghan	Ireland
Under 15	13%	22%	20%
15–24	13%	11%	12%
25–44	27%	29%	29%
45–64	28%	23%	24%
65+	20%	16%	14%
Primary or none	18%	14%	9.7%
Lower secondary	17%	16%	14%
Leaving Cert	43%	38%	35%
Diploma or cert	4.9%	5.8%	5.8%
Degree or higher	18%	25%	36%

Full pageThree Mile House’s Who lives here pageOpen the page

Where born15% born outside Ireland Ages42.1 median age · 20% are 65 or over Households64 households · 2.3 people per household Irish speakers40% can speak Irish · 0% speak Irish daily outside school

CSO, Census 2022 · Co. Monaghan and Ireland: the median of their towns of 2,500+

Town hall

Turnout in Cavan-Monaghan was among the highest at the 2024 general election

With 8 of 18 seats, Sinn Féin are the largest group on Monaghan County Council, short of the 10 a majority needs. Three Mile House answers to one council, Monaghan County Council; Ireland has no town tier. Local election turnout came to 56%. At the general election 64% voted, about level with Co. Monaghan’s towns (64%) and above Irish towns (59%).

8/18seats held by Sinn Féin

Seats on Monaghan County · June 2024

Sinn Féin8

Fine Gael6

Fianna Fáil3

Independent1

Turnout	Three Mile House	Co. Monaghan	Ireland
Local elections, June 2024	56%	55%	46%
General election, November 2024	64%	64%	59%

Councillors

8/18

Sinn Féin seats on Monaghan County, the largest party

56%

turnout, June 2024

TDs elected for Cavan-Monaghan

Full pageThree Mile House’s town hall & politics pageOpen the page

Who’s in chargeNo majority: Sinn Féin lead with 8 of 18 (10 needed)Councillors5 councillors · Ballybay-Clones How Three Mile House voted56% turned out · Local elections, June 2024 · Co. Monaghan towns 55%TDs5 TDs · Cavan-Monaghan

Department of Housing count sheets, 2024

History

Three Mile House has 68 inventory buildings per 10,000 residents (Co. Monaghan towns 191, Irish towns 48)

Homes from before 1919 make up 4.8% of the total, between Co. Monaghan’s towns (5.2%) and Irish towns (3.4%). Three Mile House’s built heritage counts one inventory entry, of regional standing.

1inventory buildings

Buildings by NIAH rating · NIAH

International0

National0

Regional1

Among them

Saint Mary's Catholic Church 1810

sites on the Sites and Monuments Record

1810

earliest dated inventory building

Heritage	Three Mile House	Co. Monaghan	Ireland
Inventory buildings per 10,000 residents	68	191	48
Archaeological sites on the record	0	17	11

Full pageThree Mile House’s history pageOpen the page

NIAH buildingsOne building on the inventory Older homes5% built before 1919 · Irish towns: 3%Monuments0 sites · On the Sites and Monuments Record Questions“How many historic buildings are there in Three Mile House?”

NIAH, the National Inventory of Architectural Heritage · Sites and Monuments Record · CSO, Census 2022 homes by year built

Nearby attractions

The Barn and 7 more within 40 km

One place to visit is mapped within 5 km of Three Mile House; with it, the best known within 40 km.

All attractions →

Historic siteHistoric siteThe Barn3.4 km outside town, to the northeast

CathedralSt Macartan's Cathedral, Monaghan6.4 km northeast

CastleCastle Leslie15 km northeast

CathedralThe Cathedral of Saint Patrick and Saint Felim32 km southwest

CastleCloughoughter Castle36 km southwest

CathedralSt. Fethlimidh’s Cathedral36 km southwest

Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).

Photo credits (5)

St Macartan's Cathedral, Monaghan: JohnArmagh, CC BY-SA 3.0, Wikimedia Commons
Castle Leslie: Lukiebaggs at English Wikipedia, Public domain, Wikimedia Commons
The Cathedral of Saint Patrick and Saint Felim: JohnArmagh, Public domain, Wikimedia Commons
Cloughoughter Castle: Oliver Dixon, CC BY-SA 2.0, Wikimedia Commons
St. Fethlimidh’s Cathedral: Sarah777 at English Wikipedia, Public domain, Wikimedia Commons

Keep exploring

Everything we know about Three Mile House

15pages on Three Mile House

The big questions

SafetyHousing & costProperty pricesSchoolsHealthWork & commuteNatural hazards0.3% of homes in high-radon areas

Out and about

OutdoorsAttractionsClimateWeather

The story

Who lives hereMedian age 42.1 History1 building on the National Inventory Town hallFamous people

Famous people from around Three Mile House

No notable person born in Three Mile House is on our list; these were born in the towns around it.

How we find them →

James Cecil ParkeIrish tennis player (1881-1946) · born in Clones

Patrick McCabeIrish writer (born 1955) · born in Clones

Kevin McBrideIrish boxer · born in Clones · born 1973

Charles Gavan DuffyIrish nationalist, journalist, poet and… · born in Monaghan

Jonathan DouglasIrish footballer · born in Monaghan · born 1981

Mary LeeAustralian activist · born in Monaghan · 1821–1909

Photo credits

Charles Gavan Duffy: not stated, Public domain · Jonathan Douglas: currybet, CC BY-SA 2.0 · Mary Lee: State Library of South Australia, CC BY 2.0

Three Mile House’s neighbours

The nearest places of 1,000 or more. Boundaries: Tailte Éireann, CSO Urban Areas 2022 and Electoral Divisions.

MonaghanClonesBallybayCootehillThree Mile House

How the neighbours grade

Town	People	km	Overall	Cost	Safety	Health
Three Mile House	148	—	—	—	—	—
Monaghan	7,894	5.8	A⁻	A	C⁺	B⁺
Clones	1,885	13	—	A⁺	A⁻	C⁻
Ballybay	1,329	13	—	A⁺	B	B⁻
Cootehill Cavan	1,856	17	—	A⁺	B⁻	D

People: CSO, Census 2022. Distances: centre to centre.

Questions about Three Mile House

Is Three Mile House a young town or an old one?

The median age in Three Mile House is 42.1, against 37.6 in the median of Irish towns.

Is Three Mile House growing?

Three Mile House had 148 people at the 2022 census, up from 138 in 2016: 7.2% more, against 7.6% in the median of Irish towns.

How do people in Three Mile House get to work?

75% of working residents drive to work and 14% walk, cycle or take the bus or train (the median of Irish towns: 23%).

About Three Mile House

Urban area in Co. Monaghan

148 people live in Three Mile House, in the area of Monaghan County Council. TownRatings uses the CSO’s 2022 Urban Areas as Ireland’s towns: the physical town, as people mean the word, rather than a county or a council area, so its figures cover the town itself.

Built from Tailte Éireann’s boundaries and the CSO’s Census 2022 (CC BY 4.0)

Population: 148 (CSO, Census 2022)
County: Monaghan
Council: Monaghan County Council
Local electoral area: Ballybay-Clones
Dáil constituency: Cavan-Monaghan
Name in Irish: Teach na dTrí Mhíle
Area: 0.1 sq mi (0.2 km²)
CSO code: UA:34035

Sources: CSO, Census 2022 Small Area Population Statistics (CC BY 4.0) · Tailte Éireann, Urban Areas and Electoral Divisions 2022 (CC BY 4.0). Under Creative Commons Attribution 4.0 (CC BY 4.0).

Contains Central Statistics Office (CSO) data, Census 2022, and Tailte Éireann boundaries (CSO Urban Areas, Small Areas, local electoral areas, constituencies), under Creative Commons Attribution 4.0 (CC BY 4.0).