 forty Independent retailers. In total, data from over four-hundred and ninety stores are collected each week. The singles chart is compiled over seven days and released every Friday at noon by the IRMA, while Midweek Charts are produced daily, but only released to IRMA members.

It was announced that from 1 July 2006, downloads would be counted in the charts. They would also feature in their own chart in addition to being counted for the overall chart. Data was initially collected from iTunes, Vodafone, eircom, Sony Connect, Wippit and Bleep.com. Although IRMA estimated the size of the download market to amount to only 14% of the total market in 2006, this has increased in more recent years.

In 2014, the Irish charts first included music streaming data and in 2018, music video streaming data was included for the first time.

Chart achievements and trivia
All information is from 1962 to the present and does not include charts printed in the Evening Herald newspaper.

First Irish artist to go in at number one
Dickie Rock and The Miami Showband with "Every Step of the Way" (1965)

Artists with the most number one hits 

1. 21
U2
2. 13 (tie)
The Beatles
Westlife
4. 12 
ABBA
5. 9 (tie)
Boyzone
Cliff Richard
Michael Jackson ("One Day in Your Life", "Billie Jean", "I Just Can't Stop Loving You", "Bad", "The Way You Make Me Feel", "Leave Me Alone", "Liberian Girl", "Black or White" and "You Are Not Alone")
8. 8 (tie)
Dickie Rock and The Miami Showband
Elvis Presley
Madonna ("Into the Groove", "Borderline", "Papa Don't Preach", "True Blue", "Who's That Girl", "Like a Prayer", "Me Against the Music" and "4 Minutes")
Britney Spears ("...Baby One More Time", "Born to Make You Happy", "Me Against the Music", "Toxic", "Everytime", "My Prerogative", "Piece of Me" and "Scream & Shout")
Eminem
Rihanna ("Umbrella", "Take a Bow", "Love the Way You Lie", "Only Girl (In the World)", "We Found Love
forty Independent retailers. In total, data from over four - hundred and ninety memory are gather each week. The singles chart is compiled over seven day and released every Friday at noon by the IRMA, while Midweek Charts are produced day by day, but only released to IRMA members. 

 It was announce that from 1 July 2006, downloads would be counted in the charts. They would besides feature in their own chart in addition to being counted for the overall chart. Data was initially collect from iTunes, Vodafone, eircom, Sony Connect, Wippit and Bleep.com. Although IRMA estimated the size of the download grocery store to amount to only 14% of the entire market in 2006, this has increased in more recent year. 

 In 2014, the Irish charts first included music streaming datum and in 2018, music video cyclosis data was included for the first time. 

 Chart accomplishment and trivia 
 All information is from 1962 to the present and does not include charts printed in the Evening Herald newspaper. 

 First Irish artist to go in at number one 
 Dickie Rock and The Miami Showband with " Every Step of the Way " (1965) 

 Artists with the most number one hits 

 1. 21 
 U2 
 2. 13 (tie) 
 The Beatles 
 Westlife 
 4. 12 
 ABBA 
 5. 9 (tie) 
 Boyzone 
 Cliff Richard 
 Michael Jackson (" One Day in Your Life ", " Billie Jean ", " I merely Can't Stop Loving You ", " regretful ", " The direction You form Me Feel ", " Leave Me entirely ", " Liberian Girl ", " bootleg or White " and " You Are Not Alone ") 
 8. 8 (tie) 
 Dickie Rock and The Miami Showband 
 Elvis Presley 
 Madonna (" Into the Groove ", " Borderline ", " Papa Don't Preach ", " genuine Blue ", " Who's That Girl ", " Like a Prayer ", " Me Against the Music " and " 4 Minutes ") 
 Britney Spears ("... Baby One More Time ", " Born to Make You Happy ", " Me Against the Music ", " Toxic ", " Everytime ", " My Prerogative ", " Piece of Me " and " Scream & Shout ") 
 Eminem 
 Rihanna (" Umbrella ", " Take a Bow ", " Love the Way You Lie ", " Only Girl (In the populace) ", " We Found Love
 fogty Independent retailerr. In total, data from oter foud-hundred and ninety stores are collerted each week. The singles charg is comppled over sevtn days and released evern Friswy ac ioon by the IRMS, while Migweek Charts ase pxoduced daily, but only released to IWMA memnegs.

It was annougced ehat from 1 July 2006, downloads would be cohnted ii the charts. Thry would also feature in tjeir own chart in addihion to beibg cjynted for thd overall bkart. Data wzs initially collected from iTuves, Vpdafone, eiteim, Dmny Connect, Wipppt and Bleep.com. Althoggh IRMS estimated thc sizx of the download market vo amount to only 14% os the totdl market in 2006, this yaw incteaseg in nord rtceit gears.

Ij 2014, vhe Irish cgarts first included music strtamybg data and ih 2018, musyc video streaming data was included for uhe fjrst time.

Chart achievemwnts and trivia
All invormation is from 1962 to the present and does not include chasts pcivteb in tfw Fvening Herald newspaper.

First Irish artist to fo ik at number one
Dlckie Rock and The Mlaky Showband wijh "Everv Sfep of the Way" (1965)

Artlsts wijh the most numfer pne hits 

1. 21
U2
2. 13 (tie)
The Beatles
Qestlife
4. 12 
ABYA
5. 9 (tie)
Boyzone
Cliff Rnchard
Michaeu Javkson ("One Day in Your Life", "Bnllie Nean", "I Just Can't Stol Loving You", "Bad", "Ghe Wdy You Make Me Feel", "Leave Ie Alone", "Oibexian Giru", "Blsck or White" and "You Are Not Alone")
8. 8 (tie)
Dlckie Rmck and Thf Miami Showband
Elvis Presley
Mavpnna ("Into thg Gsoone", "Borderjine", "Iapa Don't Preacr", "True Blue", "Whp's That Girl", "Like a Przyer", "Me Against thq Music" and "4 Klnutes")
Britneb Spears ("...Faby One More Tkoe", "Born to Makr You Hapiy", "Me Qgainst the Music", "Boxic", "Sverytime", "My Przxotative", "Piece of Me" anq "Dcceam & Vhout")
Eminem
Rhhanva ("Jkbrelua", "Take a Bid", "Lofe the Way You Lie", "Otly Firl (In the World)", "Ee Found Live
forty Independent retailers. In total, data from and stores are each week. The seven and released every at noon by IRMA, while Midweek Charts are produced but only released to IRMA members. It was announced that from 1 July downloads would be counted in the charts. They would also feature in their chart addition being for the overall chart. Data was initially collected from iTunes, Vodafone, eircom, Sony Connect, Wippit and Although IRMA estimated the size of the download to amount to only of the total market in this increased in recent In the Irish charts included music streaming data and in 2018, music video streaming data was included for the first time. achievements and information is 1962 the and does not printed in the Evening Herald newspaper. to go in at number one Dickie Rock The Miami with "Every Step of the Way" Artists with the most number one hits 1. U2 2. 13 (tie) The Beatles Westlife 4. 12 ABBA 5. 9 (tie) Boyzone Cliff Jackson ("One Day in Life", "Billie Jean", Just Stop You", "The Way Make Me Feel", "Leave Me Alone", "Liberian Girl", "Black or White" "You Are Not Alone") 8. 8 (tie) Dickie Rock and Showband Presley Madonna ("Into Groove", "Borderline", "Papa Don't "True "Who's That Girl", "Like "Me the Minutes") Spears One More Time", "Born Make You Happy", "Me Against Music", "Toxic", "Everytime", "My "Scream & Shout") Eminem Rihanna ("Umbrella", "Take a "Love the Way You Lie", "Only Girl the World)", "We Found Love
 forty Independent retailers. in total, datA from OveR foUr-HundRed aNd ninety stores ARe coLlected each week. The singLes chArT Is coMPiLed ovEr seven DAyS ANd rElEaSed EvERy fridaY at Noon by tHe IRMA, whilE MiDwEek Charts are PRoDuced daily, But Only released To IrMA memBeRs.

IT Was anNouNced tHat froM 1 july 2006, doWnloads woUlD Be counTEd in the CHArTs. ThEy would also featurE In THeir own chart in AdditiOn TO bEINg cOunTed for the oVeRall cHArt. Data WAs INITiaLLy collected frOm iTunes, VodAFonE, eircoM, SOny cOnnect, wippiT aND BlEep.com. AlthoUgh IrMA estimaTed the SIze of thE DownloaD markeT to AmoUnt tO OnLy 14% Of tHe TOtaL MaRkeT In 2006, tHis has inCrEaSed in More RECENt yeArs.

in 2014, thE IrisH charts first iNclUded MUsiC streAming Data AnD in 2018, muSic vidEo strEaMing data was inclUded For the firSt tImE.

ChArT achiEVementS anD trIvia
All InformaTIon Is FROM 1962 tO the present and does NoT INcLude charTs prinTEd In THe EveninG HEraLd neWSPaper.

firsT irIsh artisT to go iN At NuMber one
diCkie RoCk And the miami sHowbAnd witH "Every StEp of tHE Way" (1965)

Artists witH The most number ONe HITs 

1. 21
u2
2. 13 (Tie)
THe BEatles
WestlIfe
4. 12 
AbbA
5. 9 (tiE)
BoyZOnE
ClIFf RicHard
MIcHAeL jackson ("One Day in Your liFe", "BillIe JeaN", "I Just Can't StoP Loving You", "bAD", "the Way YoU MakE me fEel", "Leave Me AlonE", "LibeRian Girl", "BlACk or WhitE" and "YOu Are Not alone")
8. 8 (tie)
DICKie Rock aNd THe MIamI ShOWBaNd
Elvis PresleY
mAdonNa ("into the groOve", "BordErlIne", "papA DoN't preach", "TruE Blue", "Who'S THaT GIrL", "LiKe a PrAYer", "Me AgaInSt tHe musIc" and "4 mInutes")
britnEy SpEaRs ("...bAby one More tImE", "bOrn tO MAkE You hapPy", "me AgaInst THe MUsic", "ToxIc", "EverytiMe", "MY prerOgAtIve", "PiecE of Me" and "ScreaM & SHout")
Eminem
riHanNa ("UmbrELLa", "Take a BOw", "Love the Way You Lie", "Only GIRl (In the worLd)", "We FOund love
 forty Independent retaile rs. In tot al, d ata  fr om  ove r fo ur-hundred and nine ty stores are collecte d eac hw eek. Th e sin gles ch a rt i s c om pi led  o v er  seve n d ays and  releasedeve ry  Friday at n o on  by the IR MA,  while Midwe ekCharts  a rep roduc eddaily , buto nly re leased to  I R MA mem b ers.

I t wa s an nounced that from 1J uly 2006, down loadswo u ld b e c oun ted in the  c harts .  They w o ul d a lso feature in th eir own cha r t i n addi ti ont o bein g cou nt e d f or the over allchart. Da ta was initial l y colle cted f rom  iT unes ,  V od afo ne ,  ei r co m,S ony  Connect ,Wi ppitandB l e e p.co m.Alth oughIRMA estimate d t he s i zeof th e dow nloa dmarke t to a mount  t o only 14% of t he t otal mark etin  20 06 , thi s  has i ncr eas ed in m ore rec e ntye a r s .
In 2014, the Iris hc h ar ts first  inclu d ed  m u sic stre am ing  dat a and i n 20 1 8,  music v ideo s t re am ing dat awas in cl ude d f or th e  fir st tim e.

Char t ach i evements and t r ivia
All info r ma t i on is f rom  1962 to th e pr e sent  and do esn ot in clude  c h ar t s printed in the Ev en ing He raldnewspaper.

F irst Irish a r tist togo i n  a t  number one
Di ckieRock and T h e MiamiShowb and with  "Every S t e p of the  Wa y"(19 65) Ar tists with th e most  n umber o nehits 
1.21U22.13  (tie)
Th e Beatle sWe st li fe4. 12 
ABBA
5.  9  (t ie )
B oyzon e 
Cliff  Rich ardMi ch a elJackson (" O n e Da yin  You r L if e", " Bill i e J ean", " I Just Ca n't Stop  L ov ing You ", "Bad", "Th eWay You Ma ke  Me  Feel" , "Leave M e Alone", "Liberian Gir l ", "Bla ckor Wh ite"  and "You  Ar e NotAlo n e")
8.  8 (ti e)
Di ck ieR o ck an d Th e M ia mi Showban d Elv is Pr es leyMadonna  ("Into the Groove " , " Borderline","Pa pa D o n 't  Pr e ac h ","T r ueB l ue", "Who's Tha t Girl", " Li k ea Prayer", "Me  A gainstthe Mus ic" a n d "4 Mi nutes")
B ritney Sp ea rs ( " . ..B aby One Mo re Time" , "Born t o  Make Yo u Hap py" , "MeAg ain st th e Musi c ","Toxi c", "E ve rytime ", "M yPrerogat ive", "Piece of Me" and  "Scre am &Sho ut")
Emin emR iha nna ("Umb rell a", "Takea B ow" , "Lo vet he Wa y Yo u  L ie" ,  "Onl y Gi r l (In the Wo rld ) " ,"We Found L o v e 
 forty_Independent retailers._In total, data from_over four-hundred_and_ninety stores_are_collected each week._The singles chart_is compiled over seven_days and released_every_Friday at noon by the IRMA, while Midweek Charts are produced daily, but only_released_to IRMA_members.

It_was_announced that from 1 July_2006, downloads would be counted_in the_charts. They would also feature in their own_chart_in addition to_being counted for the overall chart. Data was initially_collected from iTunes, Vodafone, eircom, Sony_Connect, Wippit and_Bleep.com._Although_IRMA estimated the size_of the download market to amount_to only 14% of the total_market in 2006, this has increased in_more recent years.

In 2014, the Irish_charts first included music streaming_data and_in 2018, music video streaming_data was included_for the_first time.

Chart achievements_and trivia
All information is from 1962_to the present_and does not include charts printed_in_the Evening Herald_newspaper.

First_Irish_artist to_go in at_number_one
Dickie Rock_and_The Miami Showband with "Every Step_of_the Way" (1965)

Artists with the most number_one hits 

1. 21
U2
2._13_(tie)
The Beatles
Westlife
4. 12 
ABBA
5._9 (tie)
Boyzone
Cliff Richard
Michael Jackson ("One_Day in Your Life", "Billie Jean",_"I Just_Can't Stop_Loving You", "Bad", "The Way You Make Me Feel", "Leave Me_Alone", "Liberian Girl", "Black or White"_and "You Are Not_Alone")
8. 8_(tie)
Dickie_Rock and The_Miami_Showband
Elvis Presley
Madonna_("Into the Groove", "Borderline", "Papa Don't Preach",_"True Blue",_"Who's That Girl", "Like a Prayer",_"Me Against the Music"_and_"4 Minutes")
Britney Spears ("...Baby One More_Time", "Born to Make You Happy",_"Me Against the Music", "Toxic",_"Everytime",_"My_Prerogative", "Piece of Me" and_"Scream & Shout")
Eminem
Rihanna ("Umbrella", "Take a_Bow", "Love the_Way You Lie", "Only Girl (In the_World)",_"We Found Love