Analysis of information sources in references of the Wikipedia article "Nassau County, New York" in English language version.
There was only one post office established in present Nassau County when the Long Island post road to Sag Harbor was established September 25, 1794. It appears that the mail from New York went to Jamaica. This was the only post office in the present day Boroughs of Queens or Brooklyn before 1803. From Jamaica the mail went east along the Jericho Turnpike/Middle Country Road route and ended at Sag Harbor. The only post office on this route between Jamaica and Suffolk County was QUEENS established the same date as the others on this route 9/25/1794. This post office was officially Queens, but I have seen the area called "Queens Court House" and was located approximately in the Mineola-Westbury area. The courthouse was used until the 1870s when the county court was moved to Long Island City. Later it served as the Queens County Insane Asylum and still later as an early courthouse for the new Nassau County, during construction of the present "old" Nassau County Courthouse in Mineola. It was demolished shortly after 1900 ... after about 120 years of service of one type or the other.
When Queens County was created the courts were transferred from Hempstead to Jamaica Village and a County Court was erected. When the building became too small for its purposes and the stone meeting house had been erected, the courts were held for some years in that edifice. Later a new courthouse was erected and used until the seat of justice was removed to North Hempstead.
That was the year when the "Old Brig" courthouse was vacated after 90 years of housing lawbreakers. The county court moved from Mineola to Long Island City.
North Hempstead, Oyster Bay and the rest of Hempstead were excluded from the vote.
The county's properties all have mailing addresses in Mineola, the official county seat, but are actually within Garden City's boundaries.
1874 – Queens County Courthouse and seat of county government moved from Mineola (in present-day Nassau County) to Long Island City.
From the final withdrawal of the British in November, 1783, until the 1830s, Queens continued as an essentially Long Island area of farms and villages. The location of the county government in Mineola (in present-day Nassau County) underscores the island orientation of that era. Population grew hardly at all, increasing only from 5,791 in 1800 to 7,806 in 1830, suggesting that many younger sons moved away, seeking fortunes where land was not yet so fully taken up for farming.
1874 – Queens County Courthouse and seat of county government moved from Mineola (in present-day Nassau County) to Long Island City.
The county's properties all have mailing addresses in Mineola, the official county seat, but are actually within Garden City's boundaries.
When Queens County was created the courts were transferred from Hempstead to Jamaica Village and a County Court was erected. When the building became too small for its purposes and the stone meeting house had been erected, the courts were held for some years in that edifice. Later a new courthouse was erected and used until the seat of justice was removed to North Hempstead.
{{cite web}}: CS1 maint: unfit URL (link)From the final withdrawal of the British in November, 1783, until the 1830s, Queens continued as an essentially Long Island area of farms and villages. The location of the county government in Mineola (in present-day Nassau County) underscores the island orientation of that era. Population grew hardly at all, increasing only from 5,791 in 1800 to 7,806 in 1830, suggesting that many younger sons moved away, seeking fortunes where land was not yet so fully taken up for farming.
There was only one post office established in present Nassau County when the Long Island post road to Sag Harbor was established September 25, 1794. It appears that the mail from New York went to Jamaica. This was the only post office in the present day Boroughs of Queens or Brooklyn before 1803. From Jamaica the mail went east along the Jericho Turnpike/Middle Country Road route and ended at Sag Harbor. The only post office on this route between Jamaica and Suffolk County was QUEENS established the same date as the others on this route 9/25/1794. This post office was officially Queens, but I have seen the area called "Queens Court House" and was located approximately in the Mineola-Westbury area. The courthouse was used until the 1870s when the county court was moved to Long Island City. Later it served as the Queens County Insane Asylum and still later as an early courthouse for the new Nassau County, during construction of the present "old" Nassau County Courthouse in Mineola. It was demolished shortly after 1900 ... after about 120 years of service of one type or the other.
That was the year when the "Old Brig" courthouse was vacated after 90 years of housing lawbreakers. The county court moved from Mineola to Long Island City.
1874 – Queens County Courthouse and seat of county government moved from Mineola (in present-day Nassau County) to Long Island City.
North Hempstead, Oyster Bay and the rest of Hempstead were excluded from the vote.