Fahrwangen has a population (as of December 2018) of 2,137  As of June 2009, 20.1% of the population are foreign nationals.
 Over the last 10 years (1997–2007) the population has changed at a rate of 6.9%.
 Most of the population (as of 2000) speaks German (89.2%), with Italian being second most common ( 3.0%) and Turkish being third ( 2.0%).

The age distribution, as of 2008, in Fahrwangen is; 173 children or 9.5% of the population are between 0 and 9 years old and 253 teenagers or 13.8% are between 10 and 19.
 Of the adult population, 251 people or 13.7% of the population are between 20 and 29 years old.
 200 people or 10.9% are between 30 and 39, 330 people or 18.0% are between 40 and 49, and 249 people or 13.6% are between 50 and 59.
 The senior population distribution is 174 people or 9.5% of the population are between 60 and 69 years old, 120 people or 6.6% are between 70 and 79, there are 68 people or 3.7% who are between 80 and 89,and there are 12 people or 0.7% who are 90 and older.

As of 2000 the average number of residents per living room was 0.58 which is about equal to the cantonal average of 0.57 per room.
 In this case, a room is defined as space of a housing unit of at least 4 m² (43 sq ft) as normal bedrooms, dining rooms, living rooms, kitchens and habitable cellars and attics.
 About 55.5% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

As of 2000, there were 66 homes with 1 or 2 persons in the household, 320 homes with 3 or 4 persons in the household, and 252 homes with 5 or more persons in the household.
 As of 2000, there were 657 private households (homes and apartments) in the municipality, and an average of 2.5 persons per household.
 In 2008 there were 356 single family homes (or 45.9% of the total) out of a total of 775 homes and apartments.
 There were a total of 14 empty apartments for a 1.8% vacancy rate.
 As of 2007, the construction rate of new housing units was 2.2 new units per 1000 residents.

In the 2007 federal election the most popular party was the SVP which received 41.8% of the vote.
 The next three most popular parties were the SP (15.7%), the FDP (12.1%) and the CVP (9.1%).

The historical population is given in the following table:
Fahrwangen has a population (as of December 2018) of 2,137  As of June 2009, 20.1% of the population are foreign nationals.  Over the last 10 years (1997–2007) the population has changed at a rate of 6.9%.  Most of the population (as of 2000) speaks German (89.2%), with Italian being second most common ( 3.0%) and Turkish being third ( 2.0%).
The age distribution, as of 2008, in Fahrwangen is; 173 children or 9.5% of the population are between 0 and 9 years old and 253 teenagers or 13.8% are between 10 and 19.  Of the adult population, 251 people or 13.7% of the population are between 20 and 29 years old.  200 people or 10.9% are between 30 and 39, 330 people or 18.0% are between 40 and 49, and 249 people or 13.6% are between 50 and 59.  The senior population distribution is 174 people or 9.5% of the population are between 60 and 69 years old, 120 people or 6.6% are between 70 and 79, there are 68 people or 3.7% who are between 80 and 89,and there are 12 people or 0.7% who are 90 and older.
As of 2000 the average number of residents per living room was 0.58 which is about equal to the cantonal average of 0.57 per room.  In this case, a room is defined as space of a housing unit of at least 4 m² (43 sq ft) as normal bedrooms, dining rooms, living rooms, kitchens and habitable cellars and attics.  About 55.5% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).
As of 2000, there were 66 homes with 1 or 2 persons in the household, 320 homes with 3 or 4 persons in the household, and 252 homes with 5 or more persons in the household.  As of 2000, there were 657 private households (homes and apartments) in the municipality, and an average of 2.5 persons per household.  In 2008 there were 356 single family homes (or 45.9% of the total) out of a total of 775 homes and apartments.  There were a total of 14 empty apartments for a 1.8% vacancy rate.  As of 2007, the construction rate of new housing units was 2.2 new units per 1000 residents.
In the 2007 federal election the most popular party was the SVP which received 41.8% of the vote.  The next three most popular parties were the SP (15.7%), the FDP (12.1%) and the CVP (9.1%).
The historical population is given in the following table:
Fahrwangen