ɪnðə tˈuː θˈaʊzənd twˈɛnti wˈʌn sˈɛnsəs ʌv pˌɑːpjʊlˈeɪʃən kəndˈʌktᵻd baɪ stɐtˈɪstɪks kˈænədə, hˈeɪz hæd ɐ pˌɑːpjʊlˈeɪʃən ʌv wˈʌnhˈʌndɹɪd nˈaɪnti sˈɪks lˈɪvɪŋ ɪn sˈɛvənti nˈaɪn ʌv ɪts ˈeɪɾi wˈʌn tˈoʊɾəl pɹˈaɪvət dwˈɛlɪŋz, ɐ tʃˈeɪndʒ ʌv fɹʌm ɪts tˈuː θˈaʊzənd sˈɪkstiːn pˌɑːpjʊlˈeɪʃən ʌv wˈʌnhˈʌndɹɪd fˈɪfti.
In the 2021 Census of Population conducted by Statistics Canada, Hays had a population of 196 living in 79 of its 81 total private dwellings, a change of  from its 2016 population of 150.