Not a complete answer.
According to Prof. Ramchandra Guha
Many of the Hindus and Sikhs fleeing West Punjab were directed by government of India to a refuge camp in Kurukshetra. A vast city of tents had grown up on the plain, to house waves of migrants, sometimes up to 20,000 a day. The camp was initially planned for 100,000 refugees, but it came to accommodate three times that number. [...] Kurukshetra was the largest of the nearly 200 camps set up to house the refugees from West Punjab.
India after Gandhi; Ch. 6: Refugees and the republic
Also, according to https://en.wikipedia.org/wiki/Partition_of_India#Resettlement_in_India
Delhi received the largest number of refugees for a single city - the population of Delhi grew rapidly in 1947 from under 1 million (917.939) to a little less than 2 million (1.744.072) between the period 1941-1951. The refugees were housed in various historical and military locations such as the Old Fort (Purana Qila), Red Fort (Lal Qila), and military barracks in Kingsway Ref 1 (around the present Delhi university). The latter became the site of one of the largest refugee camps in northern India with more than 35,000 refugees at any given time besides Kurukshetra camp near Panipat.
The camp sites were later converted into permanent housing through extensive building projects undertaken by the Government of India from 1948 onwards. A number of housing colonies in Delhi came up around this period like Lajpat Nagar, Rajinder Nagar, Nizamuddin, Punjabi Bagh, Rehgar Pura, Jungpura and Kingsway.
A number of schemes such as the provision of education, employment opportunities, easy loans to start businesses, were provided for the refugees at all-India level. The Delhi refugees, however, were able to make use of these facilities much better than their counterparts elsewhere.
Ref 1: https://en.wikipedia.org/wiki/Kingsway_Camp
Here is an excerpt from a news article from The Hindu
Partition refugee colonies can finally get building plans cleared
NEW DELHI:, JULY 11, 2014 08:29 IST
Lakhs of residents in the city’s refugee colonies, which were set up after Independence, can now get building plans sanctioned by the local civic body, municipal officials said on Thursday.
The Capital’s municipal corporations can clear plans for construction in the 46 refugee colonies, making way for new buildings to replace the 60-year-old quarters. Between 1955 and 1965, the flats were given on lease to families who arrived in Delhi after Partition. Two separate units, on the ground and first floors, were made on plots of 107 to 120 yards.
Now these flats are being converted to freehold by the Land and Development Office and the civic bodies are allowing new buildings of up to five floors (four floors plus stilt parking) to come up on the plots.
These refugees were from West Punjab (in Pakistan), there were farmers among them. They had left their land, farm lands. They wanted lands. Everyone had different sizes of land. They were allotted land later in East Punjab, which is certainly not a easy process. Professor Guha's book has lots of information regarding those (comparison of lands of East and West Punjab, how lands were allotted, some schemes for these farmers, etc)