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A history of Korean lotteries: from the Housing Lottery to Lotto 6/45

Korean lotteries did not begin with Lotto. The "every Saturday, six numbers" format first appeared in December 2002, and before it lay more than a generation of other lotteries. This page follows the story using the National Archives of Korea's timeline and the operator's public data, and says which parts were verified at the source and which were not. It ends with what the data show about how Lotto first prizes have changed.

Before Lotto: special tickets and the Housing Lottery

According to the National Archives timeline, lottery-type tickets appeared soon after liberation, each with a short-term purpose: the Olympic support ticket of 1947, sold only in Seoul to raise costs for the 1948 London Olympics; the relief tickets of 1949–1950 issued under the Welfare Ticket Act (KRW 200 face value, first prize KRW 1 million) for disaster victims; the Patriotic Lottery of 1956 for industrial reconstruction and social welfare; an industrial ticket in 1962 and a trade-fair ticket in 1968. All were issued for a limited time and a stated cause.

The first regularly issued lottery was the Housing Lottery. Sales began on 15 September 1969 "to support housing stability projects for low-income households", at KRW 100 face value, with a total issue of KRW 50 million and a first prize of KRW 3 million. The first prize was raised to KRW 10 million in 1978 and KRW 30 million in 1981. The Housing Lottery was the first product to tie lottery proceeds to a defined public purpose (housing), a structure that continues today as the Lottery Fund (see Where does Korean lottery money go?).

The Olympic Lottery and the 1990s

In April 1983 an Olympic Lottery was issued to support the Seoul Olympics, with a first prize of KRW 100 million. It ended in December 1988 after 298 drawings, after which Korea Housing Bank resumed the Housing Lottery. In the early 1990s came scratch-type Expo tickets and the multi-winner Ttotto lottery (1993). The archive timeline shows the number of issuers and products growing in this period, but we could not confirm from it when the sports lottery began or how issuers were later consolidated. We list those among the unverified items below.

2002: Lotto 6/45 arrives

Lotto appeared in December 2002. In the operator's data this site collected, round 1 was drawn on 7 December 2002. Its sales were about KRW 3.68 billion and it had no first-prize winner. Where there is no winner the prize carries over to the next round; some months later, in round 19 (12 April 2003), one person won the first prize of KRW 40,722,959,400. The National Archives timeline also says "the first-prize winner of round 19 received KRW 40.7 billion", so the two sources agree. It remains the largest first prize per winner to date.

A Lotto game then cost KRW 2,000, a fact visible first in the data. The number of fourth- and fifth-prize winners was about half (0.507 times) the expectation computed with sales divided by KRW 1,000, then changes to 0.998 times from round 88. On 21 July 2004 Kyunghyang Shinmun reported that "from round 88, on sale from the 1st of next month (drawn 7 August), the price of one game falls from KRW 2,000 to KRW 1,000" and that the fifth prize would fall from KRW 10,000 to KRW 5,000. We use this as a press report; we could not open an original notice from the operator or ministry. This is why every winner-count analysis on this site starts at round 88 (see the analysis range).

2011: the pension lottery

The archive timeline introduces the Pension Lottery 520, issued in July 2011. The first-prize winner receives KRW 5 million a month for 20 years, KRW 1.2 billion in total, as an annuity. Receiving prizes in instalments rather than a lump sum ties into the Act's instalment rules; that tax is judged on the sum of the instalments is covered in the tax guide. The later product structure of Pension Lottery 720+ (payments, odds) was not confirmed here and will be handled in a separate game guide.

What the data show about Lotto first prizes

A Lotto first prize is set in proportion to sales and divided among winners. When sales rise, the pool rises, but so does the number of winners, so the amount per winner barely changed even as sales more than doubled. Across the 1,157 rounds from 88 onward that had a first-prize winner, the yearly median first prize per winner is:

Median first prize per winner by year (rounds with a winner, before tax)
YearMedian
2005about KRW 1.97 billion
2010about KRW 2.24 billion
2015about KRW 1.99 billion
2020about KRW 2.38 billion
2025about KRW 2.03 billion

Over the same period annual sales grew from KRW 2.75 trillion (2005) to KRW 6.2 trillion (2025), yet the median stays around KRW 2 billion. The overall median from round 88 is about KRW 2.03 billion; the largest per winner from then on is about KRW 14.2 billion in round 534, and the smallest is about KRW 406 million in round 546 (shared by 30 winners). These extremes arise from the large swings in winner counts discussed earlier (split risk). To avoid one misunderstanding: a news headline about a "record prize" usually refers to either the per-winner amount or the size of the rollover, so check which.

What we could not verify

This page does not cover the whole history of Korean lotteries; it is built around the confirmed timeline and Lotto 6/45 data. None of this history changes the odds or any purchase decision. For today's structure, continue to why expected value is negative.

Rounds without a first-prize winner

The data hold one more interesting shift. Among rounds 1–87 there were 11 rounds with no first-prize winner; from round 88 to 1247 there were only 3 (rounds 289, 295 and 463). More games sold per round means more expected winners, so the chance that nobody matches shrinks, as one would expect. From round 88 the expected number of first-prize winners grew from around 5–7 to about 15; with 5 expected, zero winners has a probability of about 0.7%, with 15 only 0.00003%.

Seen as a whole, the timeline shows lotteries moving from one-off tickets with a stated cause, to a single recurring weekly draw whose structure is set by rules on prizes and a fund, and then to a product whose results are public round by round. That last change is what allows this site to check claims against data at all: for earlier eras only a few facts could be confirmed from archives, while for Lotto 6/45 each round can be examined, which is why most of the figures on this page after 2002 come from the data and not from recollection.

LottoFlick is independent and not an official lottery operator. Numbers are random and cannot be predicted.

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