My brother's house is right on the northern edge of Jackson and Hinds County. If you go across the street and hop the fence, you're in Madison County.
I knew of a lady who lived in Delaware, but a small sliver of her backyard was in Pennsylvania. She had to pay property taxes in both states. She no longer lives there now.
Yes, the boundary between my arteries and veins. It's a very intricate boundary.
I used to live in an apartment complex in Maryland that was on a street in D.C.
A city boundary goes right through the hospital where I was born.
Tangent: I interned for a water company one summer. One of the intrigues was dealing with addresses on town lines. I had to determine where to draw the line between one town and the other.
Myself, no, no boundaries.
And then there's Stanstead, Quebec and Derby Line, Vermont where the boundary goes down the middle of the main street and through the library:
http://www.mascontext.com/issues/17-boundary-spring-13/life-on-the-line-at-derby-line-vermont/
If little Johnny (Jean en francais) wants to play with his buddy Billy across the street in Vermont.....he has to go through customs first!
http://goo.gl/maps/Stmvv
(Thats Canada on the left and the US on the right.....but looks like any other residential street)
I don't personally live on a boundary, but I have known five cases of people I know who have:
1-2. My dad's parents each lived on a farm on the county line road between La Salle and Grundy Counties near Seneca, IL. I believe the farm my grandma lived in is now owned by one of my dad's cousins.
3. The farm my mom's parents lived on when they got married and for the first few years of their marriage, including the first few years of my mom's life, is on the Nobles County/Rock County, Minnesota border.
4. My dad's brother lives on the road which serves as the southern boundary of New Lenox, IL.
5. For reasons I don't understand, one of the ladies I work with does not technically live in Omaha, but her back neighbor does. Not sure why one subdivision would be appealing to take over, but the one next to it is not.
I used to live at an intersection in Pittsburgh where the boundary with Wilkinsburg borough ran right by the house. It crossed my street at a sharp angle, such that the crossing from city to borough was two houses down on my side of the street, but almost directly across from me on the far side. Then it crossed the intersecting street about half a property beyond the intersection.
We had street parking, so if I parked on the Pittsburgh side of the line I could park left side to the curb, but on the Wilkinsburg side I could not. Also, Wilkinsburg had street cleaning a couple times a month, so if I was parked there I had to be sure to escape the few feet into Pittsburgh to avoid a ticket.
(It also just so happened that right outside my window, in the form of some utility lines, ran the boundary of the Pittsburgh eruv, inside of which observant Jews may carry certain items outside of their homes on the Sabbath.)
Two times I have lived along a boundary:
The back property boundary of a house I lived in in Newark, Delaware was the city line.
Rented a house in Florida where the south side of the parcel was the northern boundary of the St. Petersburg city limits.
City limits of Jeffersonville, IN are about 10 feet behind the rear edge of my property.
My dad, stepmom, brother, sister-in-law, three neices, and three nephews live on a road that nominally forms the boundary that divides the 614 and future 380 area codes from the 740 and future 220 area codes. Since the utility runs down one side of the road, however, houses on both sides have 614 numbers.
My boss lives right of the edge of the Florida/Duanesburg town line (which is also the Montgomery/Schenectady line AND the Region 2/Region 1 line, so he works for Region 1 and commutes from Region 2).
A relative of mine used to have his property bisected by a village boundary. All New York State, Nassau County, Town of North Hempstead, but the front 1/3 of his front lawn and his street was located in the Village of Old Westbury, and the rear two-thirds of the property, including the house and garage, were located in the Village of East Hills. Each levied their own taxes, although my relative only voted in the Village where his house was located.
He was one of those very, er, "demanding" residents in his old age, so we always found it rather amusing that not one, but two villages had to deal with his community concerns. Depended upon whether the concern was focused on his neighbor's property or on the street.
I "live" within rock throwing distance of the Mississippi River, which demarcates the IL/IA state line.
I used to live about 200 feet from the Tucson/Oro Valley boundary in Arizona, and lived 2 blocks south of the Geneva/St Charles boundary in Illinois for 8 years.
I used to live on the Crawford/Franklin line in Arkansas. Ironically my neighbor, across the road, in the next county, and I have the exact same name.
I don't currently live on a boundary (miss a municipal tripoint by about 500 feet, however), but according to one geodetic datum the 90°W meridian passes through my old bedroom at my parents' house.